@article{PismaZhETF.15.483,
    title = {Multiphoton Luminescence Satellites of an Impurity Crystal in a Strong Electromagnetic Field},
    author = {Kovarskii, V. A. and Ferdman, N. A.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {15},
    issue = {8},
    pages = {483},
    year = {1972},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_26632.shtml},
}