@article{PismaZhETF.27.27,
    title = {Natural optical activity of CdS crystals in the exciton region of the spectrum},
    author = {Ivchenko, E. L. and Permogorov, S. A. and Sel'kin, A. V.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {27},
    issue = {1},
    pages = {27},
    year = {1978},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_23628.shtml},
}