@article{PismaZhETF.25.95,
    title = {Superfluidity of Bose condensate of electron-hole pairs},
    author = {Sonin, E. B.},
    journal = {Письма в ЖЭТФ},
    volume = {25},
    issue = {2},
    pages = {95},
    year = {1977},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_21048.shtml},
}