@article{PismaZhETF.31.392,
    title = {Exact solution of s-d exchange model at T = 0},
    author = {Vigman, P. B.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {31},
    issue = {7},
    pages = {392},
    year = {1980},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_20434.shtml},
}