@article{PismaZhETF.12.251,
    title = {Acoustinc Paramagnetic Resonance of $Mn^{3+}$ in Corundum},
    author = {Ganapol'skii, E. M.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {12},
    issue = {5},
    pages = {251},
    year = {1970},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_26314.shtml},
}