@article{PismaZhETF.15.116,
    title = {Quantum-mechanical Formation of Vortices in a Superfluid Liquid},
    author = {Volovik, G. E.},
    journal = {Письма в ЖЭТФ},
    volume = {15},
    issue = {2},
    pages = {116},
    year = {1972},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_26504.shtml},
}