@article{PismaZhETF.38.28,
    title = {Proton decay in grand unified models with horizontal symmetry},
    author = {Berezhiani, Z. G. and Chkareuli, Dzh. L.},
    journal = {Письма в ЖЭТФ},
    volume = {38},
    issue = {1},
    pages = {28},
    year = {1983},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_22438.shtml},
}