@article{PismaZhETF.22.43, title = {Piezospectroscopic effect in local and resonant oscillations connected with a degenerate electronic state of an impurity center in a crystal}, author = {Vasil'ev, A. V. and Natadze, A. L. and Ryskin, A. I.}, journal = {πΙΣΨΝΑ Χ φότζ}, volume = {22}, issue = {1}, pages = {43}, year = {1975}, doi = {}, url = {http://jetpletters.ru/ps/0/article_23252.shtml}, }