@article{PismaZhETF.30.426,
    title = {Electron-phonon resonances in the spectrum of a rare-earth impurity ion},
    author = {Perlin, Yu. E. and Kaminskii, A. A. and Enakii, V. N. and Vylegzhanin, D. N.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {30},
    issue = {7},
    pages = {426},
    year = {1979},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_20661.shtml},
}