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@article{MZM_1987_42_1_a7, author = {E. M. Landis}, title = {Integral form of the flow theorem}, journal = {Matemati\v{c}eskie zametki}, pages = {73--78}, publisher = {mathdoc}, volume = {42}, number = {1}, year = {1987}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1987_42_1_a7/} }
E. M. Landis. Integral form of the flow theorem. Matematičeskie zametki, Tome 42 (1987) no. 1, pp. 73-78. http://geodesic.mathdoc.fr/item/MZM_1987_42_1_a7/