@article{10_4171_dm_107,
     author = {Oleg H. Izhboldin and Ina Kersten},
     title = {Excellent special orthogonal groups},
     journal = {Documenta mathematica},
     pages = {385--412},
     year = {2001},
     volume = {6},
     doi = {10.4171/dm/107},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/dm/107/}
}