1. Jon Mathews, California Institute of Technology, private communication. (a Balgol program for traces of up to 8 gamma matrices, and a machine language program for spin-one algebra)
2. A computer method for calculating Dirac traces with applications to quantum electrodynamics;Wilcox,1961
3. Trace calculation on electronic computer;Kaiser;Nuclear Physics,1963
4. Neutrino processes in stars;Levine,1963
5. Dirac matrix and tensor algebras on a computer;Levine;J. Computational Physics,1967