@article{1103038232, author = {Green, Leon W.}, title = {A sphere characterization related to Blaschke's conjecture.}, journal = {Pacific J. Math.}, volume = {10}, number = {4}, year = {1960}, pages = { 837-841}, language = {en}, url = {http://dml.mathdoc.fr/item/1103038232} }
Green, Leon W. A sphere characterization related to Blaschke's conjecture.. Pacific J. Math., Tome 10 (1960) no. 4, pp. 837-841. http://gdmltest.u-ga.fr/item/1103038232/