@article{PismaZhETF.31.659,
    title = {Oscillation of the sign of the Faraday rotation caused by $Eu^{3+}$  ions in an ultrastrong magnetic field up to 11 MG},
    author = {Pavlovskii, A. I. and Druzhinin, V. V. and Tatsenko, O. M. and Kolokol'chikov, N. P. and Bykov, A. I. and Dolotenko, M. I.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {31},
    issue = {11},
    pages = {659},
    year = {1980},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_20503.shtml},
}