@article{PismaZhETF.93.69,
    title = {Flat band in the core of topological defects: bulk-vortex correspondence in topological superfluids with Fermi points},
    author = {Volovik, G. E.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {93},
    issue = {2},
    pages = {69},
    year = {2011},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_29112.shtml},
}