@article{DAN_1992_322_1_a16,
     author = {O. A. Godin},
     title = {Reciprocity relations for acoustic fields in a three-dimensionally},
     journal = {Doklady Akademii Nauk},
     pages = {79--85},
     publisher = {mathdoc},
     volume = {322},
     number = {1},
     year = {1992},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1992_322_1_a16/}
}