@article{10_21136_CMJ_1993_128410,
     author = {Abujabal, H. A. S. and Khan, M. A. and Khan, M. S. and Samman, M. S.},
     title = {On commutativity of rings with constraints on subsets},
     journal = {Czechoslovak Mathematical Journal},
     pages = {439--449},
     publisher = {mathdoc},
     volume = {43},
     number = {3},
     year = {1993},
     doi = {10.21136/CMJ.1993.128410},
     mrnumber = {1249613},
     zbl = {0808.16037},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1993.128410/}
}