1. Massless Scalar Feynman Diagrams: Five Loops and Beyond;Broadhurst,1985
2. Renormalization and Asymptotic Expansions;Smirnov,1991
3. Renormalization and Knot Theory;Kreimer,1994
4. Map Coloring, Polyhedra and the Four-Color Problem;Barnette,1983
5. D.J. Broadhurst and D. Kreimer, in preparation.