@article{PismaZhETF.59.798,
    title = {On Fermi condensate: near the saddle point and within the vortex core},
    author = {Volovik, G. E.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {59},
    issue = {11},
    pages = {798},
    year = {1994},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_5225.shtml},
}