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@article{MAN_1980__252_163457, author = {Tudor Zamfirescu}, title = {Nonexistence of {Curvature} in {Most} {Points} of {Most} {Convex} {Surfaces.}}, journal = {Mathematische Annalen}, pages = {217--220}, publisher = {mathdoc}, volume = {252}, year = {1980}, zbl = {0427.53002}, url = {http://geodesic.mathdoc.fr/item/MAN_1980__252_163457/} }
Tudor Zamfirescu. Nonexistence of Curvature in Most Points of Most Convex Surfaces.. Mathematische Annalen, Tome 252 (1980), pp. 217-220. http://geodesic.mathdoc.fr/item/MAN_1980__252_163457/