@article{PismaZhETF.52.972,
    title = {Half-quantum vortices in superfluid $^3He-B$},
    author = {Volovik, G. E.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {52},
    issue = {6},
    pages = {972},
    year = {1990},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_17512.shtml},
}