@article{PismaZhETF.22.106,
    title = {$\Psi$ particles and new quark models},
    author = {Krasnikov, N. V. and Kuz'min, V. A. and Chetyrkin, K. G.},
    journal = {Письма в ЖЭТФ},
    volume = {22},
    issue = {2},
    pages = {106},
    year = {1975},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_23268.shtml},
}