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@article{MV_1969_21_3_a6, author = {A. M. Ej\v{s}inskij}, title = {Asimptoticheskoe povedenie integral'nyh krivyh odnogo differencial'nogo uravnenia vtorogo poryadka pri $x\to 0$}, journal = {Matemati\v{c}ki vesnik}, pages = {295 }, publisher = {mathdoc}, volume = {21}, number = {3}, year = {1969}, url = {http://geodesic.mathdoc.fr/item/MV_1969_21_3_a6/} }
A. M. Ejšinskij. Asimptoticheskoe povedenie integral'nyh krivyh odnogo differencial'nogo uravnenia vtorogo poryadka pri $x\to 0$. Matematički vesnik, Tome 21 (1969) no. 3, p. 295 . http://geodesic.mathdoc.fr/item/MV_1969_21_3_a6/