@article{Klapdorï-­Kleingrothaus:2003je, author = "Klapdorï-­Kleingrothaus, Hans Volker", title = "{Status of absolute neutrino mass and double beta decay}", doi = "10.22323/1.010.0066", journal = "PoS", year = 2003, volume = "AHEP2003", pages = "066" }