1. S. C. Frautschi, 1963, Regge Poles and S-Matrix Theory (Benjamin, New York).
2. G. F. Chew and S. C. Frautschi, 1961, Phys. Rev. Lett. 8, 394.
3. P. D. B. Collins and E. J. Squires, 1968, Regge Poles in Particle Physics (Springer, Berlin).
4. In a broad review of the strong interaction physics of the period, see Martin L. Perl, 1974, High Energy Hadron Physics (Wiley, New York). See also Frautschi, S. C, 1963, Regge Poles and S-Matrix Theory (Benjamin, New York).
5. G. F. Chew, S. C. Frautschi, and S. Mandelstam, 1962, Phys. Rev. 126, 1201.