@article{10_4153_CMB_2011_048_4,
     author = {Valenti, Angela and Zaicev, Mikhail},
     title = {Abelian {Gradings} on {Upper} {Block} {Triangular} {Matrices}},
     journal = {Canadian mathematical bulletin},
     pages = {208--213},
     year = {2012},
     volume = {55},
     number = {1},
     doi = {10.4153/CMB-2011-048-4},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-2011-048-4/}
}