@article{10_4153_CMB_2002_051_x,
     author = {Bahturin, Yu. A. and Zaicev, M. V.},
     title = {Group {Gradings} on {Matrix} {Algebras}},
     journal = {Canadian mathematical bulletin},
     pages = {499--508},
     year = {2002},
     volume = {45},
     number = {4},
     doi = {10.4153/CMB-2002-051-x},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-2002-051-x/}
}