@article{PismaZhETF.10.517,
    title = {Change of Population of Zeeman Sublevels of the Excited State of $CaF_2$:$Eu^{2+}$ Pumped with Polarized Light},
    author = {Zakharcnenya, B. P. and Ryskin, A. Ya. and Stepanov, Yu. A.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {10},
    issue = {11},
    pages = {517},
    year = {1969},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_25772.shtml},
}