TY - JOUR AU - Zh. V. Kolyadko AU - V. V. Shepelevich AU - V. V. Davydovskaya TI - Propagation of singular beams in a cubic optically active photorefractive crystal JO - Problemy fiziki, matematiki i tehniki PY - 2015 SP - 10 EP - 16 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/PFMT_2015_3_a1/ LA - ru ID - PFMT_2015_3_a1 ER -