@article{01127583, title = {Extensions of best approximation and coincidence theorems.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {20}, year = {1997}, pages = {689-698}, doi = {10.1155/S016117129700094X}, zbl = {0903.41020}, language = {en}, url = {http://dml.mathdoc.fr/item/01127583} }
Park, Sehie. Extensions of best approximation and coincidence theorems.. International Journal of Mathematics and Mathematical Sciences, Tome 20 (1997) pp. 689-698. doi : 10.1155/S016117129700094X. http://gdmltest.u-ga.fr/item/01127583/