@article{10_4153_CMB_2006_009_x,
     author = {K\"ulshammer, Burkhard},
     title = {Roots of {Simple} {Modules}},
     journal = {Canadian mathematical bulletin},
     pages = {96--107},
     year = {2006},
     volume = {49},
     number = {1},
     doi = {10.4153/CMB-2006-009-x},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-2006-009-x/}
}