Further Applications of Schur Rings to Produce GRRs for Dihedral Groups

This note is a continuation of postgraduate thesis research carried out by the first author under the supervision of the second author at the University of Malta. In that research we took a look at several results relating Schur rings to sufficient conditions for GRRs and then applied those results to produce numerical methods for constructing trivalent GRRs for dihedral groups very quickly.