@article{PismaZhETF.21.70, title = {Threshold character of the visible fluorescence excited by IR laser radiation}, author = {Basov, N. G. and Galochkin, V. T. and Zavorotnyi, S. I. and Kosinov, V. N. and Ovchinnikov, A. A. and Oraevskii, A. N. and Pankratov, A. V. and Skachkov, A. N. and Shmerling, G. V.}, journal = {πΙΣΨΝΑ Χ φότζ}, volume = {21}, issue = {1}, pages = {70}, year = {1975}, doi = {}, url = {http://jetpletters.ru/ps/0/article_22234.shtml}, }