@article{TIMM_2011_17_1_a11,
     author = {M. S. Nikol'skii},
     title = {On controllable variants of the {Richardson} model in political science},
     journal = {Trudy Instituta matematiki i mehaniki},
     pages = {121--128},
     publisher = {mathdoc},
     volume = {17},
     number = {1},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TIMM_2011_17_1_a11/}
}