@article{PismaZhETF.33.230,
    title = {Mass ratios for the SU(4) terms of the 20-multiplet and search for B mesons},
    author = {Khrushchev, V. V.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {33},
    issue = {4},
    pages = {230},
    year = {1981},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_22994.shtml},
}