Operation of Class Sums on Permutation Modules. - Holger W. Gollan; T. W. Ostermann (J. Symb. Comput., 1990)

The 2-modular representation of J1 in the principal block. - Holger W. Gollan (SIGSAM Bull., 1991)

MILSS - A Learning and Teaching Server for Multi-Media Documents. - Holger W. Gollan; Frank Lützenkirchen; Dieter Nastoll (Wide Area Networks and High Performance Computing, 1998)

A New Existence Proof for Ly, the Sporadic Simple Group of R. Lyons. - Holger W. Gollan (J. Symb. Comput., 2001)