@article{PismaZhETF.40.469,
    title = {Phase-transition splitting caused in exotic superconductors by impurities},
    author = {Volovik, G. E. and Khmel'nitskii, D. E.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {40},
    issue = {11},
    pages = {469},
    year = {1984},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_19089.shtml},
}