@article{PismaZhETF.28.235,
    title = {Phaser generation of transverse phonons by impurity centers of divalent nickel in corundum},
    author = {Ganopol'skii, E. N. and Makovitskii, D. N.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {28},
    issue = {4},
    pages = {235},
    year = {1978},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_24129.shtml},
}