@article{PismaZhETF.91.215,
    title = {Topological superfluid $^{\bf 3}$He-B in magnetic field and Ising variable},
    author = {Volovik, G. E.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {91},
    issue = {4},
    pages = {215},
    year = {2010},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_28759.shtml},
}