@article{10_4153_CMB_1975_126_9,
     author = {Stewart, Patrick N.},
     title = {Strong {Radical} {Classes} and {Idempotents}},
     journal = {Canadian mathematical bulletin},
     pages = {723--725},
     year = {1975},
     volume = {18},
     number = {5},
     doi = {10.4153/CMB-1975-126-9},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1975-126-9/}
}