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