1. Rafał Abłamowicz and Bertfried Fauser. Efficient algorithms for Clifford products using Hopf gebra methods. 2002. in preparation.
2. Rafał Abłamowicz and Bertfried Fauser. Efficient algorithms for meet and join in Grassmann-Cayley algebras. 2002. in preparation.
3. Marilena Barnabei, Andrea Brini, and Gian-Carlo Rota. On the exterior calculus of invariant theory. J. Algebra
96, 120–160, 1985.
4. Christian Brouder. A quantum field algebra. preprint, 2002. math-phl0201033.
5. Christian Brouder, Bertfried Fauser, Alessandra Frabetti, and Robert Oeckl. Let’s twist again. 2002. preprint.