@article{DAN_1977_232_4_a10,
     author = {M. M. Lavrent'ev and A. Kh. Amirov},
     title = {On a conditionally correct problem},
     journal = {Doklady Akademii Nauk},
     pages = {773--776},
     publisher = {mathdoc},
     volume = {232},
     number = {4},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1977_232_4_a10/}
}