1. G. A. Baker, Jr., Essentials of Padé Approximatifs, Academic Press, New York (1975).
2. B. F. Bayman, Lectures on Groups and Their Applications to Spectroscopy, Nordita, Copenhagen (1957).
3. B. F. Bayman and A. Lande, Nucl. Phys.
77: 1 (1966).
4. D. M. Brink and G. R. Satchler, Angular Momentum, Oxford University Press (1962).
5. D. Bessis and M. Villani, J. Math. Phys.
16: 462 (1975).