@article{PismaZhETF.28.649,
    title = {Effect of inversion of the optical axis of the CdS crystal},
    author = {Ivchenko, E. L. and Permogorov, S. A. and Sel'kin, A. V.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {28},
    issue = {10},
    pages = {649},
    year = {1978},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_24245.shtml},
}