@article{PismaZhETF.59.274,
    title = {Quadrupole magnetic field of magnetoelectric $Cr_2O_3$},
    author = {Astrov, D. N. and Ermakov, N. B.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {59},
    issue = {4},
    pages = {274},
    year = {1994},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_19614.shtml},
}