@article{PismaZhETF.114.4,
    title = {\bf Search for a heavy neutrino in the mass range under 750 keV using electron capture in $^{\bf7}$Be},
    author = {Likhovid, N. A. and Pantuev, V. S.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {114},
    issue = {1},
    pages = {4},
    year = {2021},
    doi = {10.31857/S1234567821130024},
    url = {http://jetpletters.ru/ps/dx/10.31857/S1234567821130024},
}