[1] Bickel P. J., Wichura M. S.: Convergence criteria for multiparameter stochastic processes and some applications. The Annals of Mathematical Statistics 42 (1971), 1656-1670. MR 0383482 | Zbl 0265.60011

[2] Billingsley P.: Convergence of Probability Measures. John Wiley, New York, 1968. MR 0233396 | Zbl 0172.21201