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@article{DE_1982_18_6_a2, author = {S. N. Vassilyev}, title = {The comparison method in systems {analysis.~IV}}, journal = {Differencialʹnye uravneni\^a}, pages = {938--947}, publisher = {mathdoc}, volume = {18}, number = {6}, year = {1982}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1982_18_6_a2/} }
S. N. Vassilyev. The comparison method in systems analysis.~IV. Differencialʹnye uravneniâ, Tome 18 (1982) no. 6, pp. 938-947. http://geodesic.mathdoc.fr/item/DE_1982_18_6_a2/