@article{PismaZhETF.29.665,
    title = {Ferromagnetic ordering in systems of magnetic moments of superparamagnetic particles},
    author = {Kokorin, V. V. and Osipenko, I. A.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {29},
    issue = {11},
    pages = {665},
    year = {1979},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_22194.shtml},
}