Observation of Two-Neutrino Double-Beta Decay in Xe-136 with EXO-200,
N. Ackerman et al.(EXO-200),
Phys. Rev. Lett. 107 (2011) 212501,
arXiv:1108.4193.
Detection of very small neutrino masses in double-beta decay using laser tagging,
Danilov, M. et al.,
Phys. Lett. B480 (2000) 12-18,
arXiv:hep-ex/0002003.
Search for double beta decay with the EXO-200 TPC and prospects for barium ion tagging in liquid xenon,
Gornea, Razvan(EXO Collaboration),
J.Phys.Conf.Ser. 309 (2011) 012003.