@article{PismaZhETF.63.457,
    title = {αχ  interface  in  superfluid  3He and Casimir  effect},
    author = {Volovik, G. E.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {63},
    issue = {6},
    pages = {457},
    year = {1996},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_14620.shtml},
}