@article{PismaZhETF.54.357,
    title = {Collapse of a dusty medium and Titius-Bode law in natural units},
    author = {Filippov, A. E.},
    journal = {Письма в ЖЭТФ},
    volume = {54},
    issue = {7},
    pages = {357},
    year = {1991},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_18901.shtml},
}