Stanley, H. E., Spherical model as the limit of infinite spin dimensionality, 1968, Phys. Rev., vol. 176, p. 718.
 Wilson, K. G., Quantum field theory models in less than four-dimensions, 1973, Phys. Rev. D, vol. 7, p. 2911.
 't Hooft, G., A planar diagram theory for strong interactions, 1974, Nucl. Phys. B, vol. 72, p. 461.
 't Hooft, G., A two-dimensional model for mesons, 1974, Nucl. Phys. B, vol. 75, p. 461.
 Witten, E., Baryons in the 1/N expansion, 1979, Nucl. Phys. B, vol. 160, p. 57.
 Witten, E., The 1/N expansion in atomic and particle physics, 1979, Lectures at the Cargese Summer School “Recent developments in gauge theories”, edited by G. 't Hooft et al. (Plenum, N.Y., 1980), p. 403.
 Coleman, S. R., 1/N , 1979, Lectures at the Erice International School of Subnuclear Physics (Plenum, N.Y., 1980), p. 805. Also in “Aspects of symmetry” (Cambridge University Press, 1985), p. 351.
 Makeenko, Yu., Large-N gauge theories, 1999, Lectures at the NATO-ASI on “Quantum Geometry”, Akureyri, Iceland. arXiv: hep-th/0001047.
 Coleman, S. R., Jackiw, R. and Politzer, H. D., Spontaneous symmetry breaking in the O(N ) model for large N , 1974, Phys. Rev. D, vol. 10, p. 2491.
 Abers, E. S. and Lee, B. W., Gauge theories, 1973, Phys. Rep., vol. 9, p. 1.
 Coleman, S. R. and Weinberg, E. J., Radiative corrections as the origin of spontaneous symmetry breaking, 1973, Phys. Rev. D, vol. 7, p. 1888.
 Jackiw, R., Functional evaluation of the effective potential, 1974, Phys. Rev. D, vol. 9, p. 1686.
 Nambu, Y. and Jona-Lasinio, G., Dynamical model of elementary particles based on an analogy with superconductivity. 1, 1961, Phys. Rev., vol. 122, p. 345.
 Gross, D. J. and Neveu, A., Dynamical symmetry breaking in asymptotically free field theories, 1974, Phys. Rev. D, vol. 10, p. 3235.
 Olive, K. A. et al. (Particle Data Group), Review of particle physics, 2014, Chin. Phys. C, vol. 38, p. 090001.