@article{PismaZhETF.10.361,
    title = {Relaxation Processes and Discrete Saturation Effects in the EPR Spectrum of $Nd^{3+}$ in Са$_5($РО$_4)_3F$},
    author = {Daraseliya, D. M and Maksimov, G. V. and Manenkov, A. A.},
    journal = {Письма в ЖЭТФ},
    volume = {10},
    issue = {8},
    pages = {361},
    year = {1969},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_25744.shtml},
}