@article{DAN_1984_274_4_a8,
     author = {A. E. Bereznyi and A. M. Prokhorov and I. N. Sisakyan and V. A. Soifer},
     title = {Bessel optics},
     journal = {Doklady Akademii Nauk},
     pages = {802--805},
     year = {1984},
     volume = {274},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1984_274_4_a8/}
}