@article{PismaZhETF.37.106,
    title = {Anisotropy of optimum fluctuations in crystals with a degenerate spectrum},
    author = {Kusmartsev, F. V. and Rashba, E. I.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {37},
    issue = {2},
    pages = {106},
    year = {1983},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_22738.shtml},
}