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@article{DAN_1972_202_3_a9, author = {N. Kh. Rozov}, title = {The local section method for systems with refraction of trajectories}, journal = {Doklady Akademii Nauk}, pages = {535--538}, publisher = {mathdoc}, volume = {202}, number = {3}, year = {1972}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1972_202_3_a9/} }
N. Kh. Rozov. The local section method for systems with refraction of trajectories. Doklady Akademii Nauk, Tome 202 (1972) no. 3, pp. 535-538. http://geodesic.mathdoc.fr/item/DAN_1972_202_3_a9/