1. EichtenE., GottfriedK., KinoshitaT. LaneK., and YanT-M.,Phys. Rev. Lett. 36, 500 (1976).
2. CasherA., KogutJ., and SuskindL.,Phys. Rev. D10, 732 (1974). See also R.F. Dashen in ?Proceedings of the 1975 International Symposium on Lepton and Photon Interactions at High Energy? Stanford, August 21?27, 1975.
3. Singh, V., Biswas, S.N., and Datta, K.,Phys. Rev. D (1978) (To be published).
4. WallH.S.,Analytic Theory of Continued Fractions, D. Van Nostrand Co., New York, 1948, Theorem 28.1, p. 120.
5. Stielties, T.J., ?Recherches sur les fractions continues?,Oeuvres Vol. 2, p. 402;Comptes Rendus CXVIII (1401) 1894.