%0 Journal Article %A V. V. Shepelevich %T F.~I.~Fedorov and development of the optics of photorefractive crystals %J Problemy fiziki, matematiki i tehniki %D 2011 %P 90-93 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/PFMT_2011_2_a14/ %G ru %F PFMT_2011_2_a14