@article{PismaZhETF.13.694,
    title = {Population inversion of the Levels of the Nuclear Magnetic System of Thin-film $Co^{89}$ Following Pulsed Magnetization Reversal.},
    author = {Salanskii, N. M. and Lyapunov, I. A. and Mal'tsev, V. K.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {13},
    issue = {12},
    pages = {694},
    year = {1971},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_24376.shtml},
}