1. C.B. Thorn, Reformulating string theory with the 1/N expansion, in Sakharov memorial lectures in physics, vol. 1, L.V. Keldysh and V.Ya. Fainberg eds., Nova Science Publishers, Commack U.S.A. (1992), pg. 447 [ hep-th/9405069 ] [ INSPIRE ].
2. O. Bergman and C.B. Thorn, String bit models for superstring, Phys. Rev. D 52 (1995) 5980 [ hep-th/9506125 ] [ INSPIRE ].
3. C.B. Thorn, Substructure of string, hep-th/9607204 [ INSPIRE ].
4. G. ’t Hooft, A planar diagram theory for strong interactions, Nucl. Phys. B 72 (1974) 461 [ INSPIRE ].
5. C.B. Thorn, ≥Fock space description of the 1/N c expansion of quantum chromodynamics, Phys. Rev. D 20 (1979) 1435 [ INSPIRE ].