@article{PismaZhETF.17.480, title = {Spectra of Photoexcitation of Free Excitons by Submi1limeter Radiation in "Ultrapure" Germanium}, author = {Vavilov, V. S. and Guzeev, I. V. and Zayats, V. A. and Kononenko, V. L. and Mandel'shtam, T. S. and Murzin, V. N.}, journal = {πΙΣΨΝΑ Χ φότζ}, volume = {17}, issue = {9}, pages = {480}, year = {1973}, doi = {}, url = {http://jetpletters.ru/ps/0/article_23600.shtml}, }