1. Gafurov M. U., Slastnikov A. D. To the distribution of the last exit time, the excess and the number of exit of a random walk a curved boundary. Sov. Math. Dok. 1981, v.23, N2, pp.285–288.
2. Gafurov M. U. Estimates of probability characteristics for the exit of random walk over curved boundary. Doctorate disser., Tashkent, 1981, 281p.
3. Wu. C. F. A note on the convergence rate of the strong law of large numbrs. Bull. Inst. Math. Acad. Sinica, 1973, 1, 121–124.
4. Slivka J., Severo N. C. On the strong law of large numbers. Proc. Amer. Math. Soc. 1970, 24, 4, 729–734.
5. Heyde C. C. A supplement to the strong law of large numbers. J. Appl. Prob., 1975, 12, 173–175.