@article{PismaZhETF.7.204, title = {Pulsed Superradiance at the Green Line of Thallium in Til Vapor}, author = {Isaev, A. A. and Petrash, G. G.}, journal = {πΙΣΨΝΑ Χ φότζ}, volume = {7}, issue = {6}, pages = {204}, year = {1968}, doi = {}, url = {http://jetpletters.ru/ps/0/article_25618.shtml}, }