The following publications are possibly variants of this publication:
- Improving Pilgrim Safety During the Hajj: An Analytical and Operational Research ApproachKnut Haase, Habib Z. Al-Abideen, Salim Al-Bosta, Mathias Kasper, Matthes Koch, Sven Müller, Dirk Helbing. interfaces, 46(1):74-90, 2016. [doi]
- Pilgrims' satisfaction with metro operations during HajjLucas Weber, Sven Müller 0001, Knut Haase. pubtrans, 15(3):651-674, October 2023. [doi]