@article{PismaZhETF.14.171,
    title = {Experimental Observation of Nonlinear Optical Activity},
    author = {Vlasov, D. V. and Zaitsev, V. P.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {14},
    issue = {3},
    pages = {171},
    year = {1971},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_24578.shtml},
}