@article{PFMT_2015_3_a1,
     author = {Zh. V. Kolyadko and V. V. Shepelevich and V. V. Davydovskaya},
     title = {Propagation of singular beams in a cubic optically active photorefractive crystal},
     journal = {Problemy fiziki, matematiki i tehniki},
     pages = {10--16},
     publisher = {mathdoc},
     number = {3},
     year = {2015},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/PFMT_2015_3_a1/}
}