@article{00022400, title = {A note on best approximation and invertibility of operators on uniformly convex Banach spaces.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {14}, year = {1991}, pages = {611-614}, doi = {10.1155/S0161171291000832}, zbl = {0744.47001}, language = {en}, url = {http://dml.mathdoc.fr/item/00022400} }
Holub, James R. A note on best approximation and invertibility of operators on uniformly convex Banach spaces.. International Journal of Mathematics and Mathematical Sciences, Tome 14 (1991) pp. 611-614. doi : 10.1155/S0161171291000832. http://gdmltest.u-ga.fr/item/00022400/