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@article{IVM_2002_3_a0, author = {V. N. Bobochko}, title = {A~differential turning point in the theory of singular {perturbations.~I}}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {3--14}, publisher = {mathdoc}, number = {3}, year = {2002}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_2002_3_a0/} }
V. N. Bobochko. A~differential turning point in the theory of singular perturbations.~I. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 3 (2002), pp. 3-14. http://geodesic.mathdoc.fr/item/IVM_2002_3_a0/
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