@article{ARM_1995_31_3_a3,
     author = {Ashraf, Mohammad},
     title = {A commutativity theorem for associative rings},
     journal = {Archivum mathematicum},
     pages = {201--204},
     year = {1995},
     volume = {31},
     number = {3},
     mrnumber = {1368258},
     zbl = {0839.16030},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ARM_1995_31_3_a3/}
}