@article{PismaZhETF.65.465,
    title = {Fermionic entropy of the vortex state in d-wave superconductors},
    author = {Volovik, G. E.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {65},
    issue = {6},
    pages = {465},
    year = {1997},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_15126.shtml},
}