1. B. V. Gnedenko and A. N. Kolmogorov,Limit distributions for sums of independent random variables, translated from the Russian by K. L. Chung, Addison-Wesley (1954).
2. P. Lévy,Théorie de l’addition des variables aléatoire, Gautier-Villars (1937).
3. M. Loève,Prohability Theory, D. Van Nostrand (1955).
4. K. Takano, On some limit theorems of probability distributions.Ann. Inst. Stat. Math. Tokyo, Vol. VI (1954).