Voir la notice de l'article provenant de la source Novi sad journal of mathematics website
@article{NSJOM_1986_16_1a_3, author = {Fisher Brian and Sessa Salvatore}, title = {Common fixed points of two pairs of weakly commuting mappings}, journal = {Novi Sad Journal of Mathematics}, pages = {45-59}, publisher = {mathdoc}, volume = {16}, number = {1}, year = {1986}, url = {http://geodesic.mathdoc.fr/item/NSJOM_1986_16_1a_3/} }
Fisher Brian; Sessa Salvatore. Common fixed points of two pairs of weakly commuting mappings. Novi Sad Journal of Mathematics, Tome 16 (1986) no. 1. http://geodesic.mathdoc.fr/item/NSJOM_1986_16_1a_3/