1. N. Dunford and J. T. Schwartz, Linear Operators, Vols. I and II, Wiley, New York?London (1958, 1963).
2. A. Blanc-Lapierre and A. Tortrat, "Sur la loi forte des grands nombres," C. R. Acad. Sci. Paris,267A, 740?743 (1968).
3. D. Burkholder, "Semi-Gaussian subspaces," Trans. Am. Math. Soc.,104, No. 1, 123?161 (1962).
4. V. F. Gaposhkin (Gaposkin), "Criteria for the strong law of large numbers for some classes of second-order stationary processes and homogeneous random fields," Teor. Veroyatn. Ee Primen.,22, No. 2, 295?319 (1977).
5. V. F. Gaposhkin (Gaposkin), "A theorem on the convergence almost everywhere of a sequence of measurable functions, and its applications to sequences of stochastic integrals," Mat. Sb.,104 (16), 3?21 (1977) [MATH. USSR Sb.,33, 1 (1977)].