@article{03953822, title = {On common fixed points of weakly commuting mappings and set-valued mappings.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {9}, year = {1986}, pages = {323-329}, doi = {10.1155/S0161171286000406}, zbl = {0593.54051}, language = {en}, url = {http://dml.mathdoc.fr/item/03953822} }
Sessa, S.; Fisher, B. On common fixed points of weakly commuting mappings and set-valued mappings.. International Journal of Mathematics and Mathematical Sciences, Tome 9 (1986) pp. 323-329. doi : 10.1155/S0161171286000406. http://gdmltest.u-ga.fr/item/03953822/