@article{PismaZhETF.15.147, title = {Direct Observation of Refractive Index Gradients Produced in a Liquid by an Ultrashort Laser Pulse}, author = {Kryukov, P. G. and Matveets, Yu. A. and Chekalin, S. V.}, journal = {πΙΣΨΝΑ Χ φότζ}, volume = {15}, issue = {3}, pages = {147}, year = {1972}, doi = {}, url = {http://jetpletters.ru/ps/0/article_26512.shtml}, }