@article{PismaZhETF.53.510,
    title = {$K^0-\bar{K}^0$ mixing in nonleading order in 1 /$m_c$},
    author = {Pivovarov, A. A.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {53},
    issue = {10},
    pages = {510},
    year = {1991},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_17639.shtml},
}