@article{PismaZhETF.8.571,
    title = {Angular Dependence of Two-photon Absorption in a Zinc-sulfide Crystal},
    author = {Galanin, M. D. and Chizikova, Z. A.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {8},
    issue = {10},
    pages = {571},
    year = {1968},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_26417.shtml},
}