1. H. Weyl:Selecta (Birkhauser, Basel, 1955);E. Noether:Nachr. Kgl. Gess. Wiss., Göttingen, 235 (1918);R. L. Mills andC. N. Yang:Phys. Rev.,96, 191 (1954);R. Shaw: Thesis, University of Cambridge (1955);R. Utiyama:Phys. Rev.,101, 1597 (1956);G. Costa andM. Tonin:Nuovo Cimento,5, 29 (1975);J. C. Taylor:Gauge Theories of Weak Interactions (Cambridge University Press, Cambridge, 1978);P. Ramond:Field Theory. A Modern Primer (The Benjamin-Cummings Publ. Co. Inc., Reading, Mass., 1981).
2. S. L. Glashow:Nucl. Phys.,22, 579 (1961);A. Salam:Proceedings of the VIII Nobel Symposium, Aspenasgarden, 1968;S. Weinberg:Phys. Rev. Lett.,19, 1264 (1967);Phys. Rev. D,5, 1412 (1972).
3. G.'t Hooft andM. Veltman:Ann. Inst. Henri Poincaré,20, 69 (1974);S. Deser andP. van Nieuwenhuizen:Phys. Rev. D,10, 401, 411 (1974);S. Deser, P. van Nieuwenhuizen andH. S. Tsao:Phys. Rev. D,10, 3337 (1974).
4. D. Z. Freedman, P. van Nieuwenhuizen andS. Ferrara:Phys. Rev. D,13, 3214 (1976);S. Deser andB. Zumino:Phys. Lett. B,62, 335 (1976);D. Z. Freedman andP. van Nieuwenhuizen:Phys. Rev. D,14, 912 (1976);P. van Nieuwenhuizen andS. Ferrara:Phys. Rev. Lett.,37, 1669 (1976);E. Cremmer, B. Julia andJ. Scherk:Phys. Rev. Lett. B,76, 409 (1978);M. J. Duff:Nucl. Phys. B,219, 389 (1983);M. J. Duff, B. E. W. Nilsson andC. N. Pope:Nucl. Phys. B,233, 491 (1984).
5. G. Veneziano:Nuovo Cimento A,57, 190 (1968);Y. Nambu:Proceedings of the International Conference on Symmetries and Quark Models (Gordon and Breach, New York, N. Y., 1970), p. 269;P. Ramond:Phys. Rev. D,3, 2415 (1971);A. Neveu andJ. H. Schwarz:Nucl. Phys. B,31, 86 (1971);Phys. Rev. D,4, 1109 (1971);M. B. Green andJ. H. Schwarz:Nucl. Phys. B,181, 502 (1981);Phys. Lett. B,109, 444 (1982);149, 117 (1984);D. J. Gross, J. A. Harvey, E. Martinec andR. Rohm:Phys. Rev. Lett.,54, 502 (1985).