PHOTO- AND THERMOINDUCED CHANGES OF THE OPTICAL ABSORPTION IN BI 12SIO20 CRYSTALS Статья Kisteneva M.G., Akrestina A.S., Shandarov S.M., Smirnov S.V., Bikeev O.N., Lovetskii K.P., Kargin Yu. Journal of Holography and Speckle. Том 5. 2009. С. 280-285