@article{PismaZhETF.47.236,
    title = {Interpretation of events in underground detectors at 7 h 35 min UT on 23 February 1987},
    author = {Ryazhskaya, 0. G. and Ryasnyi, V. G.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {47},
    issue = {5},
    pages = {236},
    year = {1988},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_16414.shtml},
}