@article{DAN_1969_186_6_a11,
     author = {A. G. Ramm},
     title = {Some nonlinear problems in the theory of antenna synthesis},
     journal = {Doklady Akademii Nauk},
     pages = {1277--1280},
     publisher = {mathdoc},
     volume = {186},
     number = {6},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1969_186_6_a11/}
}