@article{DAN_1984_279_4_a3,
     author = {A. V. Goncharsky and V. V. Stepanov},
     title = {The existence of smooth solutions in problems of electromagnetic radiation focusing},
     journal = {Doklady Akademii Nauk},
     pages = {788--792},
     publisher = {mathdoc},
     volume = {279},
     number = {4},
     year = {1984},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1984_279_4_a3/}
}