Mitalauskas, A., and V. Statulevičius. “Local Limit Theorem and Asymptotic Expansion for the Sums of Independent Lattice Random Variables”. Lithuanian Mathematical Journal 6, no. 4 (December 15, 1966): 569–583. Accessed August 29, 2026. https://zurnalai.vu.lt/LMJ/article/view/19754.