@article{PismaZhETF.42.307,
    title = {Underground cascades in muon groups: new method for determining the chemical composition of the primary cosmic rays},
    author = {Bakatanov, V. N. and Boziev, S. N. and Voevodskii, A. V. and Novosel'tsev, Yu. F. and Novosel'tseva, M. V. and Sten'kin, Yu. V. and Chudakov, A. E.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {42},
    issue = {7},
    pages = {307},
    year = {1985},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_21838.shtml},
}