@article{PismaZhETF.60.123,
    title = {On the sign of the intrinsic Hall effect in clean superconductors},
    author = {Kopnin, N. B.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {60},
    issue = {2},
    pages = {123},
    year = {1994},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_5278.shtml},
}