@article{PismaZhETF.5.331,
    title = {Self-action of Light in Crystals},
    author = {Ostrovskii, L. A.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {5},
    issue = {9},
    pages = {331},
    year = {1967},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_25186.shtml},
}