Sofiya Ostrovska, “Uncorrelatedness sets for random variables with given distributions”, Proc. Amer. Math. Soc., 133, № 4, 2004, 1239
Jordan Stoyanov, Stochastic Processes and Related Topics, 1998, 357
Sofiya Ostrovska, “Sets of random variables with a given uncorrelation structure”, Statistics & Probability Letters, 55, № 4, 2001, 359
Vladimír Balek, Ivan Mizera, “On the logical independence of the identities defining the stochastic independence of random events”, Statistics & Probability Letters, 31, № 4, 1997, 281