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@article{DAN_1966_170_6_a9, author = {Yu. G. Reshetnyak}, title = {Generalized derivatives and differentiability almost everywhere}, journal = {Doklady Akademii Nauk}, pages = {1273--1275}, publisher = {mathdoc}, volume = {170}, number = {6}, year = {1966}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1966_170_6_a9/} }
Yu. G. Reshetnyak. Generalized derivatives and differentiability almost everywhere. Doklady Akademii Nauk, Tome 170 (1966) no. 6, pp. 1273-1275. http://geodesic.mathdoc.fr/item/DAN_1966_170_6_a9/