1. Littlewood, D. E.: The Theorv of Group Characters, 2nd ed. Oxford (1950).
2. Spencer, A. J. M. and R. S. Rivlin: Arch. Rational Mech. Anal. 9, 45 (1962).
3. Smith, G. F.: Accad. Nazionale Lincei, Seri.e 8, Volume 9, 51 (1968).
4. Murnaghan, F. D.: Amer. J. Math. 59, 437 (1937).
5. Kiral, E. and G. F. Smith: Forthcoming.