@article{PismaZhETF.34.289,
    title = {Seismic activity of the sun and 2-yr cycle in the solar-neutrino flux},
    author = {Kopysov, Yu. S.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {34},
    issue = {5},
    pages = {289},
    year = {1981},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_23206.shtml},
}