@article{GDZPPN002057638, title = {Convex Immersions of Closed Surfaces in E3.}, journal = {Commentarii mathematici Helvetici}, volume = {35}, year = {1961}, pages = {85-92}, zbl = {0243.53043}, url = {http://dml.mathdoc.fr/item/GDZPPN002057638} }
Kuiper, Nicolaas H. Convex Immersions of Closed Surfaces in E3.. Commentarii mathematici Helvetici, Tome 35 (1961) pp. 85-92. http://gdmltest.u-ga.fr/item/GDZPPN002057638/