From Crowd Dynamics to Crowd Safety: a Video-Based Analysis. - Anders Johansson; Dirk Helbing; Habib Z. Al-Abideen; Salim Al-Bosta (Adv. Complex Syst., 2008)

Improving Pilgrim Safety During the Hajj: An Analytical and Operational Research Approach. - Knut Haase; Habib Z. Al-Abideen; Salim Al-Bosta; Mathias Kasper; Matthes Koch; Sven Müller 001; Dirk Helbing (Interfaces, 2016)