Vakhaniya, N. N., V. V. Kvaratskheliya, and V. I. Tarieladze. “Weakly Sub-Gaussian Random Elements in Banach Spaces”. Ukrains’kyi Matematychnyi Zhurnal, Vol. 57, no. 9, Sept. 2005, pp. 1187–1208, https://umj.imath.kiev.ua/index.php/umj/article/view/3678.