@article{DAN_1961_138_5_a12,
     author = {S. V. Simeonov},
     title = {A successive approximation process and its application in solving functional equations with non-linear operators of monotonic type},
     journal = {Doklady Akademii Nauk},
     pages = {1033--1034},
     publisher = {mathdoc},
     volume = {138},
     number = {5},
     year = {1961},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1961_138_5_a12/}
}