KAROBLIS, Antanas. The Approximation of Sum of Independent Distributions by the Erlang Distribution Function. Nonlinear Analysis: Modelling and Control, [S. l.], v. 7, n. 1, p. 55–60, 2002. DOI: 10.15388/NA.2002.7.1.15202. Disponível em: https://www.zurnalai.vu.lt/nonlinear-analysis/article/view/15202. Acesso em: 20 apr. 2025.