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@article{DAN_1970_191_5_a3, author = {Yu. I. Gil'derman}, title = {The trajectories of systems whose right hand side is of extremal form}, journal = {Doklady Akademii Nauk}, pages = {977--978}, publisher = {mathdoc}, volume = {191}, number = {5}, year = {1970}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1970_191_5_a3/} }
Yu. I. Gil'derman. The trajectories of systems whose right hand side is of extremal form. Doklady Akademii Nauk, Tome 191 (1970) no. 5, pp. 977-978. http://geodesic.mathdoc.fr/item/DAN_1970_191_5_a3/