@article{PFMT_2011_1_a1,
     author = {S. S. Girgel},
     title = {Properties of vectorial paraxial light beams.
},
     journal = {Problemy fiziki, matematiki i tehniki},
     pages = {20--24},
     publisher = {mathdoc},
     number = {1},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/PFMT_2011_1_a1/}
}