1. Bourgain, J.: Translation invariant forms onL p (G), 1
2. Drinfield, V. G.: Finitely additive measure onS 2 andS 3, invariant with respect to rotations. Functional Anal. Appl.18, 245?246 (1984).
3. Dunford, N., Schwartz, J. T.: Linear Operators I, New York: Interscience. 1957.
4. Greenleaf, F. P.: Invariant Means on Topological Groups. New York: Van Nostrand. 1969.
5. Johnson, B. E.: A proof of the translation invariant form conjecture forL 2(G). Bull. Sci. Math. (2)107, 301?310 (1983).