1.
Bratiichuk M, Chechelnitsky A, Usar I. Finite M/M/1 retrial model with changeable service rate. Mat. Stud. [Internet]. 2021Oct.23 [cited 2024May7];56(1):96-102. Available from: http://matstud.org.ua/ojs/index.php/matstud/article/view/217