1. The Quark Model;Kokkedee,1969
2. “Symmetries and Quark Models,” International Conference,1970
3. The Harmonic Oscillator in Modern Physics: From Atoms to Quarks;Moshinsky,1969
4. Unitary Symmetry and Elementary Particles;Lichtenberg,1970
5. Dynamical model of hadrons with fermion quarks;Drell;Phys. Rev. D,1972