@article{DAN_1965_160_1_a7,
     author = {M. M. Lavrent'ev},
     title = {A class of inverse problems for differential equations},
     journal = {Doklady Akademii Nauk},
     pages = {32--35},
     publisher = {mathdoc},
     volume = {160},
     number = {1},
     year = {1965},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1965_160_1_a7/}
}