Publications

Eronen, T., Ge, Z., de Roubin, A., Ramalho, M., Kostensalo, J., Kotila, J., Beliushkina, O., Delafosse, C., Geldhof, S., Gins, W., Hukkanen, M., Jokinen, A., Kankainen, A., Moore, I.D., Nesterenko, D.A., Stryjczyk, M., & Suhonen, J. (2022). High-precision measurement of a low Q value for allowed β−-decay of 131I related to neutrino mass determination. Physics Letters B, 830, Article 137135. https://doi.org/10.1016/j.physletb.2022.137135 Open Access

Ge, Z., Eronen, T., de Roubin, A., Kostensalo, J., Suhonen, J., Nesterenko, D. A., Beliuskina, O., de Groote, R., Delafosse, C., Geldhof, S., Gins, W., Hukkanen, M., Jokinen, A., Kankainen, A., Kotila, J., Koszorús, Á., Moore, I. D., Raggio, A., Rinta-Antila, S., . . . Zadvornaya, A. (2022). Direct determination of the atomic mass difference of the pairs 76As−76Se and 155Tb−155Gd rules out 76As and 155 Tb as possible candidates for electron (anti)neutrino mass measurements. Physical Review C, 106(1), Article 015502. https://doi.org/10.1103/PhysRevC.106.015502 Open Access

Ge, Z., Eronen, T., de Roubin, A., Tyrin, K.S., Canete, L., Geldhof, S., Jokinen, A., Kankainen, A., Kostensalo, J., Kotila, J., Krivoruchenko, M.I., Moore, I.D., Nesterenko, D.A., Suhonen, J., & Vilén, M. (2022). High-precision electron-capture Q value measurement of 111In for electron-neutrino mass determination. Physics Letters B, 832, Article 137226. https://doi.org/10.1016/j.physletb.2022.137226 Open Access

Lehnert, B., Hult, M., Lutter, G., Marissens, G., Oberstedt, S., Stroh, H., Kotila, J., Oberstedt, A., & Zuber, K. (2022). Constraints on partial half-lives of 136Ce and 138Ce double electron captures. Physical Review C, 105(4), Article 045801. https://doi.org/10.1103/PhysRevC.105.045801 Open Access

Nesterenko, D. A., Jokiniemi, L., Kotila, J., Kankainen, A., Ge, Z., Eronen, T., Rinta-Antila, S., & Suhonen, J. (2022). High-precision Q-value measurement and nuclear matrix element calculations for the double-β decay of 98Mo. European Physical Journal A, 58(3), Article 44. https://doi.org/10.1140/epja/s10050-022-00695-w Open Access

Ramalho, M., Ge, Z., Eronen, T., Nesterenko, D. A., Jaatinen, J., Jokinen, A., Kankainen, A., Kostensalo, J., Kotila, J., Krivoruchenko, M. I., Suhonen, J., Tyrin, K. S., & Virtanen, V. (2022). Observation of an ultralow-Q-value electron-capture channel decaying to 75As via a high-precision mass measurement. Physical Review C, 106(1), Article 015501. https://doi.org/10.1103/PhysRevC.106.015501 Open Access

Armatol, A., Armengaud, E., Armstrong, W., Augier, C., Avignone, F. T., Azzolini, O., Barabash, A., Bari, G., Barresi, A., Baudin, D., Bellini, F., Benato, G., Beretta, M., Bergé, L., Biassoni, M., Billard, J., Boldrini, V., Branca, A., Brofferio, C., . . . Zucchelli, S. (2021). Searching for New Physics in two-neutrino double beta decay with CUPID. In TAUP 2021 : 17th International Conference on Topics in Astroparticle and Underground Physics (Article 012233). IOP Publishing. Journal of Physics : Conference Series, 2156. https://doi.org/10.1088/1742-6596/2156/1/012233 Open Access

Ge, Z., Eronen, T., de Roubin, A., Nesterenko, D. A., Hukkanen, M., Beliuskina, O., de Groote, R., Geldhof, S., Gins, W., Kankainen, A., Koszorús, Á., Kotila, J., Kostensalo, J., Moore, I. D., Raggio, A., Rinta-Antila, S., Suhonen, J., Virtanen, V., Weaver, A. P., . . . Jokinen, A. (2021). Direct measurement of the mass difference of 72As−72Ge rules out 72As as a promising β-decay candidate to determine the neutrino mass. Physical Review C, 103(6), Article 065502. https://doi.org/10.1103/PhysRevC.103.065502 Open Access

Ge, Z., Eronen, T., Tyrin, K. S., Kotila, J., Kostensalo, J., Nesterenko, Dimitrii A., Beliuskina, O., de Groote, R., de Roubin, A., Geldhof, S., Gins, W., Hukkanen, M., Jokinen, A., Kankainen, A., Koszorús, Á., Krivoruchenko, M. I., Kujanpää, S., Moore, Ian D., Raggio, A., . . . Zadvornaya, A. (2021). Dy159 Electron-Capture : A New Candidate for Neutrino Mass Determination. Physical Review Letters, 127(27), Article 272301. https://doi.org/10.1103/PhysRevLett.127.272301 Open Access

Jokiniemi, L., Suhonen, J., & Kotila, J. (2021). Comparative Analysis of Nuclear Matrix Elements of 0νβ+β+ Decay and Muon Capture in 106Cd. Frontiers in Physics, 9, Article 652536. https://doi.org/10.3389/fphy.2021.652536 Open Access

Kleemann, J., Beck, T., Friman-Gayer, U., Pietralla, N., Werner, V., Finch, S. W., Kotila, Jenni, Krishichayan, Löher, B., Pai, H., Papst, O., Tornow, W., Weinert, M., Zilges, A. (2021). Majorana parameters of the interacting boson model of nuclear structure and their implication for 0νββ decay. Physical Review C, 104(6), Article L061302. https://doi.org/10.1103/PhysRevC.104.L061302 Open Access

Kotila, J., & Iachello, F. (2021). Nuclear matrix elements for Majoron-emitting double-β decay. Physical Review C, 103(4), Article 044302. https://doi.org/10.1103/PhysRevC.103.044302 Open Access

Kotila, J. (2021). Role of Single-Particle Energies in Microscopic Interacting Boson Model Double Beta Decay Calculations. Universe, 7(3), Article 66. https://doi.org/10.3390/universe7030066 Open Access

Kotila, J. (2021). Comparison of Microscopic Interacting Boson Model and Quasiparticle Random Phase Approximation 0νββ Decay Nuclear Matrix Elements. Frontiers in Astronomy and Space Sciences, 8, Article 652180. https://doi.org/10.3389/fspas.2021.652180 Open Access

Pirinen, P., Kotila, J., & Suhonen, J. (2021). First microscopic evaluation of spin-dependent WIMP-nucleus scattering off 183W. Physics Letters B, 816, Article 136275. https://doi.org/10.1016/j.physletb.2021.136275 Open Access

Vettenranta, J., Kotila, J., & Harju-Luukkainen, H. (2021). Nuorten voimavarat, oppimista vaikeuttavat tekijät ja kilpailullisuus oppimista määrittävinä tekijöinä PISA 2018 -tutkimuksessa. In K. Leino, J. Rautopuro, & P. Kulju (Eds.), Lukutaito – tie tulevaisuuteen : PISA 2018 Suomen pääraportti (pp. 225-260). Suomen kasvatustieteellinen seura. Kasvatusalan tutkimuksia, 82. http://urn.fi/URN:ISBN:978-952-7411-16-2 Open Access

Armengaud, E., Augier, C., Barabash, A. S., Bellini, F., Benato, G., Benoît, A., Beretta, M., Bergé, L., Billard, J., Borovlev, Y. A., Bourgeois, Ch., Briere, M., Brudanin, V., Camus, P., Cardani, L., Casali, N., Cazes, A., Chapellier, M., Charlieux, F., . . . Zolotarova, A. S. (2020). Precise measurement of 2νββ decay of 100Mo with the CUPID-Mo detection technology. European Physical Journal C, 80(7), Article 674. https://doi.org/10.1140/epjc/s10052-020-8203-4 Open Access

Cavallaro, M., Acosta, L., Adsley, P., Agodi, C., Altana, C., Amador-Valenzuela, P., Auerbach, N., Barea, J., Bellone, J. I., Bijker, R., Borello-Lewin, T., Boztosun, I., Branchina, V., Brasolin, S., Brischetto, G. A., Brunasso, O., Burrello, S., Campajola, L., Calabrese, S., . . . Zagatto, V. A. B. (2020). Recent results on heavy-ion direct reactions of interest for 0νββ decay at INFN - LNS. In L. Acosta, P. Amador-Valenzuela, & D. J. Marín-Lámbarri (Eds.), SNP '20 : XLIII Symposium on Nuclear Physics (Article 012004). Institute of Physics. Journal of Physics : Conference Series, 1610. https://doi.org/10.1088/1742-6596/1610/1/012004 Open Access

Deppisch, F. F., Graf, L., Iachello, F., & Kotila, J. (2020). Analysis of light neutrino exchange and short-range mechanisms in 0νββ decay. Physical Review D, 102(9), Article 095016. https://doi.org/10.1103/physrevd.102.095016 Open Access

Ferretti, J., Kotila, J., Vsevolodovna, R. I. M., & Santopinto, E. (2020). β-decay rates of 115,117Rh into 115,117Pd isotopes in the microscopic interacting boson-fermion model. Physical Review C, 102(5), Article 054329. https://doi.org/10.1103/physrevc.102.054329 Open Access

Kotila, J. (2020). Double beta decay and the quest for Majorana neutrinos. In INPC2019 : 27th International Nuclear Physics Conference (Article 012023). Institute of Physics. Journal of Physics : Conference Series, 1643. https://doi.org/10.1088/1742-6596/1643/1/012023 Open Access

NUMEN Collaboration. (2020). New Results from the NUMEN Project. In NN2018 : Proceedings of 13th International Conference on Nucleus-Nucleus Collisions (Article 010045). Physical Society of Japan. JPS Conference Proceedings, 32. https://doi.org/10.7566/jpscp.32.010045 Open Access

Vettenranta, J., Hiltunen, J., Kotila, J., Lehtola, P., Nissinen, K., Puhakka, E., Pulkkinen, J., & Ström, A. (2020). Perustaidoista vauhtia koulutielle : Neljännen luokan oppilaiden matematiikan ja luonnontieteiden osaaminen: kansainvälinen TIMSS 2019 -tutkimus Suomessa. Koulutuksen tutkimuslaitos. https://jyx.jyu.fi/handle/123456789/73016 Open Access

Vettenranta, J., Hiltunen, J., Kotila, J., Lehtola, P., Nissinen, K., Puhakka, E., Pulkkinen, J., & Ström, A. (2020). Tulevaisuuden avaintaidot puntarissa : kahdeksannen luokan oppilaiden matematiikan ja luonnontieteiden osaaminen: kansainvälinen TIMSS 2019 -tutkimus Suomessa. Jyväskylän yliopisto, Koulutuksen tutkimuslaitos. http://urn.fi/URN:ISBN:978-951-39-8474-8 Open Access

Agodi, C., Cappuzzello, F., Acosta, L., Altana, C., Amador-Valenzuela, P., Auerbach, N., Barea, J., Bellone, J.I., Bijker, R., Bonanno, D., BorelloLewin, T., Boztosun, I., Branchina, V., Brasolin, S., Brischetto, G., Brunasso, O., Burrello, S., Calabrese, S., Calabretta, L., & Kotila, J. (2019). Recent results on Heavy-Ion induced reactions of interest for 0νββ decay. In L. Acosta, P. Amador-Valenzuela, & D. J. Marin-Lambarri (Eds.), Proceedings of the XLII Symposium on Nuclear Physics, 2019 7–10 January 2019, Cocoyoc, Morelos, Mexico (1308, Article 012002). Institute of Physics. Journal of Physics : Conference Series. https://doi.org/10.1088/1742-6596/1308/1/012002 Open Access

Armengaud, E., Augier, C., Barabash, A. S., Bellini, F., Beno, A., Beretta, M., Bergé, L., Besson, N., Billard, J., Borovlev, Y. A., Bourgeois, Ch., Brudanin, V., Camus, P., Cardani, L., Casali, N., Cazes, A., Chapellier, M., Charlieux, F., de Combarieu, M., . . . Zolotarova, A. S. (2019). Precise measurement of 2ν2β decay of 100Mo with Li2MoO4 low temperature detectors : Preliminary results. In O. Civitarese, I. Stekl, & J. Suhonen (Eds.), MEDEX'19 : Workshop on Calculation of Double-Beta-Decay Matrix Elements (Article 020005). American Institute of Physics. AIP Conference Proceedings, 2165. https://doi.org/10.1063/1.5130966

Azzolini, O., Beeman, J. W., Bellini, F., Beretta, M., Biassoni, M., Brofferio, C., Bucci, C., Capelli, S., Cardani, L., Carniti, P., Casali, N., Chiesa, D., Clemenza, M., Cremonesi, O., Cruciani, A., Dafinei, I., Di Domizio, S., Ferroni, F., Gironi, L., . . . Zolotarova, A. (2019). Evidence of Single State Dominance in the Two-Neutrino Double-β Decay of 82Se with CUPID-0. Physical Review Letters, 123(26), Article 262501. https://doi.org/10.1103/PhysRevLett.123.262501 Open Access

Cappuzzello, F., Agodi, C., Acosta, L., Altana, C., Amador-Valenzuela, P., Auerbach, N., Barea, J., Bellone, J., Bijker, R., Bonanno, D., Borello-Lewin, T., Boztosun, I., Branchina, V., Brasolin, S., Brischetto, G., Brunasso, O., Burrello, S., Calabrese, S., Calabretta, L., . . . Zagatto, V. A. B. (2019). The NUMEN project @ LNS : Status and perspectives. In O. Civitarese, I. Stekl, & J. Suhonen (Eds.), MEDEX'19 : Workshop on Calculation of Double-Beta-Decay Matrix Elements (Article 020003). American Institute of Physics. AIP Conference Proceedings, 2165. https://doi.org/10.1063/1.5130964

Cavallaro, M., Acosta, L., Agodi, C., Altana, C., Amador-Valenzuela, P., Auerbach, N., Barea, J., Bellone, J. I., Bijker, R., Bonanno, D., Borello-Lewin, T., Boztosun, I., Branchina, V., Brasolin, S., Brischetto, G. A., Brunasso, O., Burrello, S., Calabrese, S., Calabretta, L., . . . Zagatto, V. A. B. (2019). Recent results on heavy-ion induced reactions of interest for neutrinoless double beta decay at INFN-LNS. In G. de Angelis, & L. Corradi (Eds.), NSD 2019 : IV International Conference on Nuclear Structure and Dynamics (Article 01009). EDP Sciences. EPJ Web of Conferences, 223. https://doi.org/10.1051/epjconf/201922301009 Open Access

Kotila, J., Graf, L., Deppisch, F.F., & Iachello, F. (2019). Nuclear physics of non-standard 0νβ β-decay. In O. Civitarese, I. Stekl, & J. Suhonen (Eds.), MEDEX'19 : Workshop on Calculation of Double-Beta-Decay Matrix Elements (Article 020017). American Institute of Physics. AIP Conference Proceedings, 2165. https://doi.org/10.1063/1.5130978 Open Access

Kotila, J. (2019). Fascinating puzzle called double beta decay. In R. Maruyama (Ed.), Symmetries and Order : Algebraic Methods in Many Body Systems : A symposium in celebration of the career of Professor Francesco Iachello (Article 020009). American Institute of Physics. AIP Conference Proceedings, 2150. https://doi.org/10.1063/1.5124581 Open Access

NUMEN Collaboration. (2019). Challenges in double charge exchange measurements for neutrino physics. In F. Cerutti, A. Ferrari, T. Kawano, F. Salvat-Pujol, & P. Talou (Eds.), NRM 2018 : Proceedings of the 15th International Conference on Nuclear Reaction Mechanisms (pp. 233-238). CERN - the European Organization for Nuclear Research. CERN Proceedings, 1. http://cds.cern.ch/record/2669349 Open Access

NUMEN Collaboration. (2019). The NUMEN Project @ LNS : Status and perspectives. Il Nuovo Cimento C, 42(2-3), Article 57. https://doi.org/10.1393/ncc/i2019-19057-2 Open Access

NUMEN collaboration. (2019). New experimental campaign of NUMEN project. In R. Maruyama (Ed.), Symmetries and Order : Algebraic Methods in Many Body Systems : A symposium in celebration of the career of Professor Francesco Iachello (2150, Article 030001). American Institute of Physics. AIP Conference Proceedings. https://doi.org/10.1063/1.5124590 Open Access

NUMEN collaboration. (2019). The NUMEN project @ LNS : Status and perspectives. In R. Maruyama (Ed.), Symmetries and Order : Algebraic Methods in Many Body Systems : A symposium in celebration of the career of Professor Francesco Iachello (2150, Article 2150). American Institute of Physics. AIP Conference Proceedings. https://doi.org/10.1063/1.5124592 Open Access

Pirinen, P., Kotila, J., & Suhonen, J. (2019). Spin-dependent WIMP-nucleus scattering off 125Te, 129Xe, and 131Xe in the microscopic interacting boson-fermion model. Nuclear Physics A, 992, Article 121624. https://doi.org/10.1016/j.nuclphysa.2019.121624 Open Access

Barea, J., & Kotila, J.-M. (2018). Single Particle Levels and ββ-Decay Matrix Elements in The Interacting Boson Model. In C. Agodi, & F. Cappuzzello (Eds.), CNNP2017 : Conference on Neutrino and Nuclear Physics (Article 012003). IOP Publishing. Journal of Physics: Conference Series, 1056. https://doi.org/10.1088/1742-6596/1056/1/012003 Open Access

Cavallaro, M., Cappuzzello, F., Agodi, C., Acosta, L., Auerbach, N., Bellone, J., Bijker, R., Bonanno, D., Bongiovanni, D., Borello-Lewin, T., Boztosun, I., Branchina, V., Bussa, M. P., Calabrese, S., Calabretta, L., Calanna, A., Calvo, D., Carbone, D., Lomelí, E. C., . . . Zagatto, V.A.B. (2018). Measuring nuclear reaction cross sections to extract information on neutrinoless double beta decay. In A. Gargano, L. Coraggio, & N. Itaco (Eds.), 12th International Spring Seminar on Nuclear Physics: Current Problems and Prospects for Nuclear Structure, Proceedings (Article 012021). Institute of Physics Publishing. Journal of Physics: Conference Series, 966. https://doi.org/10.1088/1742-6596/966/1/012021 Open Access

Graf, L., Deppisch, F. F., Iachello, F., & Kotila, J.-M. (2018). Short-range neutrinoless double beta decay mechanisms. Physical Review D, 98(9), Article 095023. https://doi.org/10.1103/PhysRevD.98.095023 Open Access

Cappuzzello, F., Agodi, C., Acosta, L., Auerbach, N., Bellone, J., Bijker, R., Bonanno, D., Bongiovanni, D., Borello-Lewin, T., Boztosun, I., Branchina, V., Bussa, M. P., Calabrese, S., Calabretta, L., Calanna, A., Carbone, D., Cavallaro, M., Calvo, D., Lomelí, E. R. C., . . . Zagatto, V. (2017). The NUMEN project @ LNS : Status and perspectives. In O. Civitarese, I. Stekl, & J. Suhonen (Eds.), MEDEX'17 : Workshop on Calculation of Double-Beta-Decay Matrix Elements (Article 020004). American Institute of Physics. AIP Conference Proceedings, 1894. https://doi.org/10.1063/1.5007629 Open Access

Cappuzzello, F., Aciksoz, E., Acosta, L., Aslanouglou, X., Auerbach, N., Bellone, J., Bijker, R., Bonanno, D., Bongiovanni, D., Borello, T., Boztosun, I., Bussa, M. P., Busso, L., Calabrese, S., Calabretta, L., Calanna, A., Calvo, D., Carbone, D., Cavallaro, M., . . . Zagatto, V. A. (2017). The NUMEN project @ LNS : Status and perspectives. In A. Marrone, A. Mirizzi, & D. Montanino (Eds.), NOW 2016 : Proceedings of the Neutrino Oscillation Workshop (pp. 1-4). Sissa. PoS : Proceedings of Science, 075. https://pos.sissa.it/283/075 Open Access

Haaranen, M., Kotila, J.-M., & Suhonen, J. (2017). Spectrum-shape method and the next-to-leading-order terms of the β-decay shape factor. Physical Review C, 95(2), Article 024327. https://doi.org/10.1103/PhysRevC.95.024327 Open Access

Kotila, J.-M., & Barea, J. (2016). Occupation probabilities of single particle levels using the microscopic interacting boson model: Application to some nuclei of interest in neutrinoless double-β decay. Physical Review C, 94(3), Article 034320. https://doi.org/10.1103/PhysRevC.94.034320 Open Access

Barea, J., Kotila, J.-M., & Iachello, F. (2015). 0νββ and 2νββ nuclear matrix elements in the interacting boson model with isospin restoration. Physical Review C, 91(3), Article 034304. https://doi.org/10.1103/PhysRevC.91.034304 Open Access

Barea, J., Kotila, J.-M., & Iachello, F. (2015). Limits on sterile neutrino contributions to neutrinoless double beta decay. Physical Review D, 92(9), Article 093001. https://doi.org/10.1103/PhysRevD.92.093001 Open Access

Iachello, F., Barea, J., & Kotila, J.-M. (2015). Recent results in double beta decay. Nuclear and Particle Physics Proceedings, 265–266(August-September), 25-27. https://doi.org/10.1016/j.nuclphysbps.2015.06.006

Iachello, F., Kotila, J.-M., & Barea, J. (2015). Quenching of gA and its impact in double beta decay. In NEUTEL 2015 : XVI International Workshop on Neutrino Telescopes. Sissa. PoS : Proceedings of Science, NEUTEL2015. http://pos.sissa.it/archive/conferences/244/047/NEUTEL2015_047.pdf Open Access

Kotila, J.-M., Barea, J., & Iachello, F. (2015). Phase-space factors and half-life predictions for Majoron-emitting β−β− decay. Physical Review C, 91(6), Article 064310. https://doi.org/10.1103/PhysRevC.91.064310 Open Access

Kotila, J.-M., Barea, J., & Iachello, F. (2015). Recent theoretical results for 0νββ-decay including R0νECEC and 0νββM. In O. Civitarese, I. Stekl, & J. Suhonen (Eds.), MEDEX'15 : Workshop on Calculation of Double-Beta-Decay Matrix Elements (Article 020013). American Institute of Physics. AIP Conference Proceedings, 1686. https://doi.org/10.1063/1.4934902

Kotila, J.-M., & Lenzi, S. M. (2014). Collective features of Cr and Fe isotopes. Physical Review C - Nuclear Physics, 89(6), Article 064304. https://doi.org/10.1103/PhysRevC.89.064304 Open Access

Kotila, J.-M., Barea, J. L., & Iachello, F. (2014). Neutrinoless double-electron capture. Physical Review C - Nuclear Physics, 89(6), Article 064319. https://doi.org/10.1103/PhysRevC.89.064319 Open Access

Kotila, J.-M., Suhonen, J., & Delion, D.-S. (2010). Description of the two-neutrino ββ decay of 100Mo by pnMAVA. Journal of Physics G: Nuclear and Particle Physics, 37(1), Article 015101. https://doi.org/10.1088/0954-3899/37/1/015101

Kotila, J.-M., Suhonen, J., & Delion, D.-S. (2009). Two-neutrino double-beta decay of 76Ge in an anharmonic vibrator approach. J. Phys. G Nucl. Phys., (36), 045106. https://doi.org/10.1088/0954-3899/36/4/045106

Kotila, J.-M., Suhonen, J., & Delion, D.-S. (2007). Analysis of the low-lying collective states using the MAVA. In Proceedings of the Predeal International Summer School "Collective Motion and Phase Transitions in Nuclear Systems", Predeal, Romania 2006, eds. A. A. Raduta, V. Baran, A. C. Gheorghe and I. Ursu (World Scientific,. https://doi.org/10.1142/9789812770417_0016

Kotila, J.-M., Suhonen, J., & Delion, D.-S. (2006). Study of the low-lying collective states using a microscopic anharmonic vibrator approach,. Czech. J. Phys..

Kotila, J.-M., Suhonen, J., & Delion, D.-S. (2006). Study of the low-lying collective states in 94Mo-100Mo isotopes using the MAVA. Nucl. Phys. A.

Kotila, J.-M., Suhonen, J., & Delion, D. S. (2003). Microscopic calculation of the electric decay properties of low-energy vibrational states in even 110-120Cd isotopes. Phys. Rev. C, 68, 014307. https://doi.org/10.1103/physrevc.68.014307

Kotila, J.-M., Suhonen, J., & Delion, D. S. (2003). Low-lying collective states in 98-106Ru isotopes studied using a microscopic anharmonic vibrator approach. Phys. Rev. C, 68, 054322.