@article{PismaZhETF.57.402,
    title = {Polarization of optical echo in $Pr^{3+}$:$LaF_3$},
    author = {Lisin, V. N.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {57},
    issue = {7},
    pages = {402},
    year = {1993},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_17804.shtml},
}