Bennett, Curtis ; Gramlich, Ralf ; Hoffman, Corneliu ; Shpectorov, Sergey (2007):
Odd-dimensional orthogonal groups as amalgams of unitary groups. Part 1: general simple connectedness.
In: Journal of Algebra, 312, pp. 426-444. [Article]

Gramlich, Ralf ; Hoffman, Corneliu ; Nickel, Werner ; Shpectorov, Sergey (2005):
Even-dimensional orthogonal groups as amalgams of unitary groups.
In: Journal of Algebra, 284, pp. 141-173. [Article]

Bennett, Curtis ; Gramlich, Ralf ; Hoffman, Corneliu ; Shpectorov, Sergey
Ivanov, A. A. ; Liebeck, M. W. ; Saxl, J. (eds.) (2003):
Curtis-Phan-Tits Theory.
In: Groups, combinatorics & geometry, pp. 13-30,
World Scientific Publishing, L.M.S. Durham Symposium on Groups, Geometry and Combinatorics, Durham, United Kingdom, July 16 - 26, 2001, ISBN 9812383123,
[Conference or Workshop Item]

Gramlich, Ralf ; Hoffman, Corneliu ; Shpectorov, Sergey (2003):
A phantype theorem for Sp(2n,q).
In: Journal of Algebra, 264, pp. 358-384. [Article]

Bennett, Curtis D. ; Gramlich, Ralf ; Hoffmann, Cornelius ; Shpectorov, Sergey (2002):
Curtis-Phan-Tits theory.
2244, Darmstadt, Technische Hochschule Darmstadt, Fachbereich Mathematik, [Book]

Gramlich, Ralf ; Hoffmann, Cornelius ; Shpectorov, Sergey (2002):
A Phan-type theorem for Sp(2n, q).
2245, Darmstadt, Technische Hochschule Darmstadt, Fachbereich Mathematik, [Book]