Danilenko, Svetlana, Jurgita Markevičiūtė, and Jonas Šiaulys. “Randomly Stopped Sums With Exponential-Type Distributions”. Nonlinear Analysis: Modelling and Control 22, no. 6 (October 27, 2017): 793–807. Accessed May 4, 2024. https://www.journals.vu.lt/nonlinear-analysis/article/view/13362.