@article{PismaZhETF.20.256,
    title = {Possibility of focusing and self-focusing of light beams in a semiconductor by varying the electron component of its dielectric constant},
    author = {Maev, R. G. and Pado, G. S. and Poluektov, I. A. and Pustovoit, V. I.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {20},
    issue = {4},
    pages = {256},
    year = {1974},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_27244.shtml},
}