@article{1103051396, author = {Clement, Paul A.}, title = {Generalized convexity and surfaces of negative curvature.}, journal = {Pacific J. Math.}, volume = {3}, number = {4}, year = {1953}, pages = { 333-368}, language = {en}, url = {http://dml.mathdoc.fr/item/1103051396} }
Clement, Paul A. Generalized convexity and surfaces of negative curvature.. Pacific J. Math., Tome 3 (1953) no. 4, pp. 333-368. http://gdmltest.u-ga.fr/item/1103051396/