My research has been concentrated on the so-called minimum interference frequency assignment problem (MI-FAP) and resulted in a Ph.D. thesis defended at Universiteit Maastricht in November 1999. The thesis mainly deals with two exact approaches for the problem: a polyhedral investigations of an integer linear programming formulation, and a dynamic programming algorithm based on a tree decomposition of the constraint graph. The developed algorithms are tested on a data set of the European research project CALMA (Cominatorial ALgorithms for Military Applications) in which different combinatorial algorithms were tested for the radio link frequency assignment problem. The different deliverables of the CALMA project are available by anonymous ftp. For an up-to-date overview of the results for the CALMA benchmark instances, have a look at the CALMA page of FAP web.
Our latest contribution to the frequency assignment literature is a survey, completed in 2001. The digest been published at FAP web. Other publications can be found in my bibliography.