@article{DAN_1984_275_3_a16,
     author = {A. G. Megrabov},
     title = {A group approach to inverse problems for differential equations},
     journal = {Doklady Akademii Nauk},
     pages = {583--586},
     publisher = {mathdoc},
     volume = {275},
     number = {3},
     year = {1984},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1984_275_3_a16/}
}