Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MAT_1965_9_4_a8, author = {R. DeMarr}, title = {Common fixed points for commuting contraction mappings}, journal = {Matematika}, pages = {139--141}, publisher = {mathdoc}, volume = {9}, number = {4}, year = {1965}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MAT_1965_9_4_a8/} }
R. DeMarr. Common fixed points for commuting contraction mappings. Matematika, Tome 9 (1965) no. 4, pp. 139-141. http://geodesic.mathdoc.fr/item/MAT_1965_9_4_a8/