@article{DAN_1963_148_3_a13,
     author = {S. V. Simeonov},
     title = {Application of a method of successive approximations to the solution of certain types of functional equations},
     journal = {Doklady Akademii Nauk},
     pages = {534--537},
     publisher = {mathdoc},
     volume = {148},
     number = {3},
     year = {1963},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1963_148_3_a13/}
}