1. J.-P. Lebrun:Differentials of Magnetic Currents, unpublished andNuovo Cimento A,99, 211 (1988).
2. J.-P. Lebrun:A Notable Exception to the Electric Charge Quantization rule, preprint 1987.
3. E. Whittaker andG. Watson:Modern Analysis, p. 133 and 154, respectively (Cambridge University Press, 1969).
4. I. S. Gradshteyn andI. M. Rydzhik:Tables of Integrals, Series, and Products, definite integral no3.367, p. 316,e.g., for the coefficientsa k, see,M. Abramowitz andI. Stegun:Handbook of Mathematical Functions, 11-1-15, p. 481 (NBS, 1964).