@article{10_4153_CJM_1970_128_6,
     author = {Lissner, David and Geramita, Anthony},
     title = {Remarks on {Op} and {Towber} {Rings}},
     journal = {Canadian journal of mathematics},
     pages = {1109--1117},
     year = {1970},
     volume = {22},
     number = {6},
     doi = {10.4153/CJM-1970-128-6},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1970-128-6/}
}