@article{PismaZhETF.16.353,
    title = {Level Shifts and Widths of $p\bar{p}$-atom},
    author = {Dal'karov, O. D. and Samoilov, V. M.},
    journal = {Письма в ЖЭТФ},
    volume = {16},
    issue = {6},
    pages = {353},
    year = {1972},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_26846.shtml},
}