@article{DAN_1978_241_6_a15,
     author = {S. P. Efimov and R. Z. Muratov},
     title = {Scattering theory interference theorems in vector problems of low-frequency diffraction},
     journal = {Doklady Akademii Nauk},
     pages = {1315--1318},
     publisher = {mathdoc},
     volume = {241},
     number = {6},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1978_241_6_a15/}
}