Study of the neutrino mass in a double beta-decay

The scanned version of an early paper
Ya.B.Zeldovich and M.Yu.Khlopov
Study of the neutrino mass in a double beta-decay.
Pis'ma v ZhETF (1981), V.54, PP. 128-151.
[English translation: JETP Lett. (1981) V.34, no.3, PP. 141-145]
Ya.B.Zeldovich and M.Yu.Khlopov
Study of the neutrino mass in a double beta-decay.
Pis'ma v ZhETF (1981), V.54, PP. 128-151.
[English translation: JETP Lett. (1981) V.34, no.3, PP. 141-145]