@article{10_4153_CJM_1980_071_6,
     author = {Nicholson, W. K. and Waiters, J. F. and Zelmanowitz, J. M.},
     title = {On {Extensions} of {Weakly} {Primitive} {Rings}},
     journal = {Canadian journal of mathematics},
     pages = {937--944},
     year = {1980},
     volume = {32},
     number = {4},
     doi = {10.4153/CJM-1980-071-6},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1980-071-6/}
}