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@article{MV_1971_23_1_a4, author = {S. D. Milu\v{s}eva and D. D. Bainov}, title = {Ob usrednenii v nekotoryh kvazilinejnyh sistemah obykhovennyh differencial'nyh uravnenij}, journal = {Matemati\v{c}ki vesnik}, pages = {31 }, publisher = {mathdoc}, volume = {23}, number = {1}, year = {1971}, url = {http://geodesic.mathdoc.fr/item/MV_1971_23_1_a4/} }
S. D. Miluševa; D. D. Bainov. Ob usrednenii v nekotoryh kvazilinejnyh sistemah obykhovennyh differencial'nyh uravnenij. Matematički vesnik, Tome 23 (1971) no. 1, p. 31 . http://geodesic.mathdoc.fr/item/MV_1971_23_1_a4/