@article{PismaZhETF.15.677,
    title = {Description of Temporal Evolution of the К К System on the Basis of the Relaxation Equation for the Density Matrix},
    author = {Marinov, M. S.},
    journal = {Письма в ЖЭТФ},
    volume = {15},
    issue = {11},
    pages = {677},
    year = {1972},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_26690.shtml},
}