@article{PIM_1990_N_S_47_61_a18,
     author = {Valeriu Popa},
     title = {A {Common} {Fixed} {Point} {Theorem} of {Weakly} {Commuting} {Mappings}},
     journal = {Publications de l'Institut Math\'ematique},
     pages = {132 },
     publisher = {mathdoc},
     volume = {_N_S_47},
     number = {61},
     year = {1990},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PIM_1990_N_S_47_61_a18/}
}