@article{PFMT_2017_3_a1,
     author = {S. S. Girgel},
     title = {Power properties of vector vortex beams of {Laplace{\textendash}Gauss}},
     journal = {Problemy fiziki, matematiki i tehniki},
     pages = {13--17},
     year = {2017},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/PFMT_2017_3_a1/}
}