@article{DAN_1989_307_5_a2,
     author = {A. M. Denisov},
     title = {Inverse problems for nonlinear ordinary differential equations},
     journal = {Doklady Akademii Nauk},
     pages = {1040--1042},
     year = {1989},
     volume = {307},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1989_307_5_a2/}
}