@article{PismaZhETF.28.351,
    title = {Lowering of the optical class of an antiferromagnetic crystal, induced by a longitudinal magnetic field},
    author = {Kharchenko, N. F. and Eremenko, V. V. and Belyi, L. I.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {28},
    issue = {6},
    pages = {351},
    year = {1978},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_24159.shtml},
}