Netherlands, Technological University Eindhoven, Mathematics, Deptt. of-. creator Bussemaker, F. C. ; auth. Mathon, R. A. ; jt. auth. Seidel, J. J. ; jt. auth. text The auth. 1979 monographic 98p. By F. C. Bussemaker, R. A. Mathon and J. J. Seidel "T. H. report 79-WSK-05" 511.5 N469.TT