@article{PismaZhETF.34.252, title = {Inverse population in a paramagnetic crystal produced as a result of thermal excitation of the spin system by a pulsed magnetic field}, author = {Vaisfel'd, M. P. and Imamutdinov, F. S. and Khasanov, A. Kh.}, journal = {πΙΣΨΝΑ Χ φότζ}, volume = {34}, issue = {5}, pages = {252}, year = {1981}, doi = {}, url = {http://jetpletters.ru/ps/0/article_23196.shtml}, }