@article{DAN_1982_264_1_a0,
     author = {R. R. Akhmerov and V. A. Novikov},
     title = {Investigation of solutions of a differential equation not solved for the leading derivative},
     journal = {Doklady Akademii Nauk},
     pages = {11--13},
     publisher = {mathdoc},
     volume = {264},
     number = {1},
     year = {1982},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1982_264_1_a0/}
}