@article{1028998904, author = {Robertson, M. S.}, title = {Some radius of convexity problems.}, journal = {Michigan Math. J.}, volume = {10}, number = {1}, year = {1963}, pages = { 231-236}, language = {en}, url = {http://dml.mathdoc.fr/item/1028998904} }
Robertson, M. S. Some radius of convexity problems.. Michigan Math. J., Tome 10 (1963) no. 1, pp. 231-236. http://gdmltest.u-ga.fr/item/1028998904/