@article{ARM_2005__41_2_a3,
     author = {Ashraf, Mohammad},
     title = {On left $(\theta,\varphi)$-derivations of prime rings},
     journal = {Archivum mathematicum},
     pages = {157--166},
     publisher = {mathdoc},
     volume = {41},
     number = {2},
     year = {2005},
     mrnumber = {2164665},
     zbl = {1114.16031},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ARM_2005__41_2_a3/}
}