@article{1183528777, author = {Asplund, Edgar}, title = {Positivity of duality mappings}, journal = {Bull. Amer. Math. Soc.}, volume = {73}, number = {6}, year = {1967}, pages = { 200-203}, language = {en}, url = {http://dml.mathdoc.fr/item/1183528777} }
Asplund, Edgar. Positivity of duality mappings. Bull. Amer. Math. Soc., Tome 73 (1967) no. 6, pp. 200-203. http://gdmltest.u-ga.fr/item/1183528777/