@article{PismaZhETF.29.696,
    title = {Frequency selection of $Nd^{3+}$ ions in glass excited by monochromatic laser radiation at the resonant transition $^4F_{9/2}\to ^4F_{3/2}$},
    author = {Basiev, T. T. and Voron'ko, Yu. K. and Mirov, S. B. and Prokhorov, A. M.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {29},
    issue = {11},
    pages = {696},
    year = {1979},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_22202.shtml},
}