Maniušis, Vytautas, and Alfredas Račkauskas. “Convergence of the Residuals Based Empirical Characteristic Functions”. Lietuvos matematikos rinkinys 43, no. spec. (December 22, 2003): 525–531. Accessed May 17, 2024. https://www.journals.vu.lt/LMR/article/view/32523.