Transient solution of the M/M/c queue with balking and reneging. - Ragab Omarah Al-Seedy; A. A. El-Sherbiny; Shaban A. El-Shehawy; Sherif I. Ammar (Comput. Math. Appl., 2009)

A matrix approach for the transient solution of an M/M/1/N queue with discouraged arrivals and reneging. - Sherif I. Ammar; A. A. El-Sherbiny; S. A. El-Shehawy; Ragab Omarah Al-Seedy (Int. J. Comput. Math., 2012)

Analysis of an M|M|1 driven fluid queue with multiple exponential vacations. - Sherif I. Ammar (Appl. Math. Comput., 2014)

Fluid queue driven by an M/M/1 disasters queue. - Sherif I. Ammar (Int. J. Comput. Math., 2014)

Transient analysis of an M/M/1 queue with impatient behavior and multiple vacations. - Sherif I. Ammar (Appl. Math. Comput., 2015)

Analysis of an N-Policy GI/M/1 Queue in a Multi-Phase Service Environmentwith Disasters. - Tao Jiang 023; Sherif I. Ammar; Baoxian Chang; Liwei Liu (Int. J. Appl. Math. Comput. Sci., 2018)

Transient and steady-state analysis of a queuing system having customers' impatience with threshold. - Sapana Sharma; Rakesh Kumar 015; Sherif Ibrahim Ammar (RAIRO Oper. Res., 2019)

Performance Analysis of Preemptive Priority Retrial Queueing System with Disaster under Working Breakdown Services. - Sherif I. Ammar; Pakkirisamy Rajadurai (Symmetry, 2019)

Fluid M/M/1 catastrophic queue in a random environment. - Sherif I. Ammar (RAIRO Oper. Res., 2021)

Ergodicity and perturbation bounds for Mt/Mt/1 queue with balking, catastrophes, server failures and repairs. - Alexander I. Zeifman; Yacov Satin; Ivan Kovalev; Sherif I. Ammar (RAIRO Oper. Res., 2021)

Optimizing energy harvesting in web of things services: a metaheuristic approach with retrial queue under working vacation. - Micheal Mathavavisakan Nicholas GnanaSekar; Indhira Kandaiyan; Sherif I. Ammar (Soft Comput., 2025)