@article{ARM_1997__33_4_a5,
     author = {Ashraf, Mohammad},
     title = {Commutativity of associative rings through a {Streb's} classification},
     journal = {Archivum mathematicum},
     pages = {315--321},
     publisher = {mathdoc},
     volume = {33},
     number = {4},
     year = {1997},
     mrnumber = {1601337},
     zbl = {0913.16017},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ARM_1997__33_4_a5/}
}