1. Convergence rates in the law of large numbers;Baum, Leonard E.;Trans. Amer. Math. Soc.,1965
2. Delayed sums and Borel summability of independent, identically distributed random variables;Chow, Y. S.;Bull. Inst. Math. Acad. Sinica,1973
3. On a theorem of Hsu and Robbins;Erdös, P.;Ann. Math. Statistics,1949