Four papers on probability - Chung, Kai Lai 1917-2009; Fuchs, Wolfgang H.; Chung, Kai Lai 1917-2009; Erdös, Paul 1913-1996 (1951)
Enth.: Chung, Kai L. ; Fuchs, Wolfgang H.: On the distribution of values of sums of random variables. Chung, Kai L. ; Erdös, P.: Probability limit theorems assuming only the first moment I. Chung, Kai L. ; Kac M.: Remarks on fluctuations of sums of independent random variables. Donsker, Monroe D.: An invariance principle for certain probability limit theorems