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@article{MZM_1985_38_5_a14, author = {A. V. Asriev}, title = {A lemma on smoothing}, journal = {Matemati\v{c}eskie zametki}, pages = {764--769}, publisher = {mathdoc}, volume = {38}, number = {5}, year = {1985}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1985_38_5_a14/} }
A. V. Asriev. A lemma on smoothing. Matematičeskie zametki, Tome 38 (1985) no. 5, pp. 764-769. http://geodesic.mathdoc.fr/item/MZM_1985_38_5_a14/