R.E. Valdes-Perez and J.M. Zytkow
Systematic Generation of Constituent Models of Particle Families
Physical Review E, 54:2102-2110, 1996.

R.~E. Valdes-Perez
On the Justification of Multiple Selection Rules of Conservation in Particle Physics Phenomenology
Computer Physics Communications, 94:25-30, 1996.

R.E. Valdes-Perez and M. Erdmann
Systematic Induction and Parsimony of Phenomenological Conservation Laws
Computer Physics Communications, 83:171-180, 1994.