1. G. M. Bergman and I. Kaplansky, A cofinal coloring theorem for partially ordered algebras,Order,1 (1985) 259?263. MR86h:06036
2. Y.-M. Chen, A. M. Garsia, J. Remmel, Algorithms for plethysm, pp. 109?153 ofCombinatorics and Algebra, (Boulder Colo. 1983), Contemporary Mathematics #34, Amer. Math. Soc., Providence RI 1984. MR 86f:05010
3. David Handelman,Positive polynomials and product type actions of compact groups, Memoirs of the Amer. Math. Soc., #320, 1985. MR86h:46091
4. David Handelman, Caractères virtuels de groupes de Lie compacts connexes qui divisent un caractère,Comptes Rendus de l'Académie des Sciences, Ser. I,302 (1986) 459?462
5. Gerhard P. Hochschild,The Structure of Lie Groups, Holden-Day, 1965. MR34#7696