On stability of sums of nonnegative random variables
V. V. Petrov

References
1.	B. V. Gnedenko, A. N. Kolmogorov, Predelnye raspredeleniya dlya summ nezavisimykh sluchainykh velichin, Gostekhteoretizdat, Moskva–Leningrad, 1949
2.	N. Etemadi, “Stability of sums of weighted nonnegative random variables”, J. Multivariate Analysis, 13 (1983), 361–365
3.	V. V. Petrov, Summy nezavisimykh sluchainykh velichin, Nauka, Moskva, 1972
4.	V. V. Petrov, “Ob usilennom zakone bolshikh chisel dlya posledovatelnosti neotritsatelnykh sluchainykh velichin”, Teoriya veroyatn. i ee primen., 53:2 (2008), 379–382