Harutyunyan, H. S., and H. H. Igityan. “ON INCREASING HAZARD RATE OF WAITING TIME IN THE $M |G|1|\infty|$ MODEL”. Proceedings of the YSU A: Physical and Mathematical Sciences 43, no. 1 (218) (February 19, 2009): 24–28. Accessed July 3, 2024. https://journals.ysu.am/index.php/proceedings-phys-math/article/view/vol43_no1_2009_pp024-028.