Al-Ghais & Cooper (1996), Apel & Türkay (1999), El-Sayed et al. (2016)†, Hogarth & Beech (2002), Hogarth & Beech (2005), Hornby (1997), Ismail & Ahmed (1993), Kumar (2019)†, Naderloo (2017)†, Naderloo et al. (2015)†, Naderloo et al. (2016)†, Naderloo & Türkay (2012), Naderloo et al. (2010)†, Naser et al. (2010)†, Rosenberg (2020), Rupp (2013)†, Rupp (2013)†, Rupp (2014)†, Saher et al. (2014)†, Shih et al. (2022)
Entries marked with † represent indirect references to location through citation.