MatsakI. K. “Weak Convergence of the Extreme Values of Independent Random Variables in Banach Spaces With Unconditional Bases”. Ukrains’kyi Matematychnyi Zhurnal, Vol. 48, no. 6, June 1996, pp. 805-12, https://umj.imath.kiev.ua/index.php/umj/article/view/5280.