@article{PismaZhETF.6.644,
    title = {Nonlinear Optics of Gyrotropic Media},
    author = {Akhmanov, S. A. and Zharikov, V. I.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {6},
    issue = {5},
    pages = {644},
    year = {1967},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_25444.shtml},
}