1. N. Dunford and J. T. Schwartz, Linear Operators, Part 1, General Theory, Interscience, New York (1958).
2. A. D. Aleksandrov, [A. D. Alexandroff], ?Additive set functions in abstract spaces?, Mat. Sb.,8 (50), No. 2, 307?348 (1940);9 (51), No. 3, 563?628 (1941);13 (55), Nos. 2?3, 169?238 (1943).
3. M. A. Woodbury, ?A decomposition theorem for finitely additive set functions? Bull. Am. Math. Soc.,56, No. 2, 171?172 (1950).
4. L. J. Heider, ?A representation theory for measures on Boolean algebras?, Mich. Math., J.,5, No. 2, 213?221 (1958).
5. J. L. Kelley, ?Measures on Boolean algebras?, Pac. J. Math.,9, No. 4, 1165?1177 (1959).