Voir la notice de l'article provenant de la source Novi sad journal of mathematics website
@article{NSJOM_2008_38_1a_2, author = {M. Akram and A. A. Zafar and A. A. Siddiqui}, title = {A general class of contractions: $A$-contractions}, journal = {Novi Sad Journal of Mathematics}, pages = {25-33}, publisher = {mathdoc}, volume = {38}, number = {1}, year = {2008}, url = {http://geodesic.mathdoc.fr/item/NSJOM_2008_38_1a_2/} }
M. Akram; A. A. Zafar; A. A. Siddiqui. A general class of contractions: $A$-contractions. Novi Sad Journal of Mathematics, Tome 38 (2008) no. 1. http://geodesic.mathdoc.fr/item/NSJOM_2008_38_1a_2/