@article{PismaZhETF.42.119,
    title = {Step potential of quarkonium},
    author = {Bykov, A. A. and Dremin, I. M.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {42},
    issue = {3},
    pages = {119},
    year = {1985},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_21561.shtml},
}