@article{DAN_1971_200_4_a4,
     author = {M. M. Lavrent'ev and Yu. E. Anikonov and F. N. Fazylov},
     title = {Approximate solution of some nonlinear operator equations},
     journal = {Doklady Akademii Nauk},
     pages = {770--772},
     publisher = {mathdoc},
     volume = {200},
     number = {4},
     year = {1971},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1971_200_4_a4/}
}