@article{NSJOM_1988_18_1a_12,
     author = {Cho Y. J. and Khan M. 

 S. and Siengh S. L.},
     title = {Common fixed points of {Weakly} 

 commuting mappings},
     journal = {Novi Sad Journal of Mathematics},
     pages = {129-142},
     publisher = {mathdoc},
     volume = {18},
     number = {1},
     year = {1988},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_1988_18_1a_12/}
}