@article{10_4153_CMB_2008_020_7,
     author = {Bahturin, Y. A. and Giambruno, A.},
     title = {Group {Gradings} on {Associative} {Algebras} with {Involution}},
     journal = {Canadian mathematical bulletin},
     pages = {182--194},
     year = {2008},
     volume = {51},
     number = {2},
     doi = {10.4153/CMB-2008-020-7},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-2008-020-7/}
}