Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MM2_1973__8_154147, author = {Peter Kosmol}, title = {Flache {Konvexit\"at} und schwache {Differenzierbarkeit.}}, journal = {Manuscripta mathematica}, pages = {267--270}, publisher = {mathdoc}, volume = {8}, year = {1973}, language = {de}, url = {http://geodesic.mathdoc.fr/item/MM2_1973__8_154147/} }
Peter Kosmol. Flache Konvexität und schwache Differenzierbarkeit.. Manuscripta mathematica, Tome 8 (1973), pp. 267-270. http://geodesic.mathdoc.fr/item/MM2_1973__8_154147/