6. Literature References
Abramowitz, M. and Stegun, I.A., 1965, Handbook of Mathematical Functions [Dover], p. xxx.
Delambre, J., 1792, Mem. Acad. Turin, 5, 143, 1790-1793
Henrici, P., 1962, Discrete Variable Methods in Ordinary Differential Equations [Wiley], pp. 172-173
, E.J., 1925, Acta Soc. Sci. Fenn., 50, No.13, 1-55
Toxvaerd, S., 1993, J. Chem. Phys. 99, 2277 (1993),