@article{DAN_1989_305_5_a6,
     author = {T. A. Sarymsakov and N. N. Ganikhodzhaev},
     title = {Analytic methods in the theory of quadratic stochastic operators},
     journal = {Doklady Akademii Nauk},
     pages = {1052--1056},
     publisher = {mathdoc},
     volume = {305},
     number = {5},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1989_305_5_a6/}
}