Al-Khayat (1996)†, Al-Musawi & Wagner (2012), Al-Nafisi et al. (2009), Baakdah (2018)†, Collins et al. (1984), Jones & Clayton (1983), Naderloo (2017)†, Naderloo & Türkay (2012)†, Naderloo et al. (2010)†, Naser et al. (2010)†, Rosenberg (2020)†, Rupp (2012)†, Rupp (2013)†, Rupp (2014)†, Rupp (2015)†, Shih et al. (2022)†
Entries marked with † represent indirect references to location through citation.