@article{PismaZhETF.90.440,
    title = {Fermion zero modes at the boundary of superfluid $^3$He-B},
    author = {Volovik, G. E.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {90},
    issue = {5},
    pages = {440},
    year = {2009},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_28610.shtml},
}