@article{PismaZhETF.23.543,
    title = {Minimal generalization of the 5-quark model of $\Psi$ particles},
    author = {Krasnikov, N. V. and Kuz'min, V. A. and Tavkhelidze, A. N. and Chetyrkin, K. G.},
    journal = {Письма в ЖЭТФ},
    volume = {23},
    issue = {9},
    pages = {543},
    year = {1976},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_27572.shtml},
}