@article{PismaZhETF.29.234,
    title = {Parameters and mechanism of elementary interaction of the electronic excitation of rare-earth ions with the local impurity oscillations},
    author = {Gapontsev, V. P. and Sverchkov, Yu. E. and Gromov, A. K. and Izyneev, A. A. and Kravchenko, V. B.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {29},
    issue = {4},
    pages = {234},
    year = {1979},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_22064.shtml},
}