Gramlich, Ralf ; Horn, Max ; Nickel, Werner (2007)
Odd-dimensional orthogonal groups as amalgams of unitary groups.Part 2: Machine computations.
In: Journal of algebra
Artikel, Bibliographie

Gramlich, Ralf ; Horn, Max ; Nickel, Werner (2006)
The complete Phan-type theorem for Sp(2n,q).
In: Journal of Group Theory, 9
Artikel, Bibliographie

Gramlich, Ralf ; Hoffman, Corneliu ; Nickel, Werner ; Shpectorov, Sergey (2005)
Even-dimensional orthogonal groups as amalgams of unitary groups.
In: Journal of Algebra, 284
Artikel, Bibliographie