@article{10_4153_CMB_2002_002_3,
     author = {Bahturin, Yuri and Kochetov, Mikhail and Montgomery, Susan},
     title = {Polycharacters of {Cocommutative} {Hopf} {Algebras}},
     journal = {Canadian mathematical bulletin},
     pages = {11--24},
     year = {2002},
     volume = {45},
     number = {1},
     doi = {10.4153/CMB-2002-002-3},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-2002-002-3/}
}