The dce package was written by Steve Linton of the Division of Computer
Science, University of St.~Andrews, North Haugh, St.~Andrews, Fife, KY16
9SS, UK
e-mail: sal@dcs.st-and.ac.uk, and any problems or questions
should be directed to him.
The work was done mainly during a visit to Lehrstuhl D f"ur Mathematik, RWTH-Aachen, Aachen, Germany, and the author gratefuly acknowledges the hospitality of Lehrstuhl D and the financial support of the Deutsche Forschungsgemeinschaft.
GAP 3.4.4