1. H. Dinges, Zur Algebra der Maßtheorie. Bull. Greek Math. Soc.19, 25?97 (1978).
2. N.Dunford and J. T.Schwartz, Linear Operators. Part I: General Theory. New York 1958.
3. P. R.Halmos, Measure Theory. Berlin-Heidelberg-New York 1974.
4. H.Jarchow, Locally Convex Spaces. Stuttgart 1981.
5. W.Rudin, Real and Complex Analysis. New York 1974.