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@article{DAN_1986_289_3_a7, author = {S. I. Pinchuk}, title = {The symmetry principle for manifolds of codimension two}, journal = {Doklady Akademii Nauk}, pages = {545--549}, publisher = {mathdoc}, volume = {289}, number = {3}, year = {1986}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1986_289_3_a7/} }
S. I. Pinchuk. The symmetry principle for manifolds of codimension two. Doklady Akademii Nauk, Tome 289 (1986) no. 3, pp. 545-549. http://geodesic.mathdoc.fr/item/DAN_1986_289_3_a7/