Al-Ghais & Cooper (1996)†, Apel & Türkay (1999)†, Collins et al. (1984), Crane (1975)†, Naderloo (2017)†, Naderloo & Türkay (2012)†, Nobili (1906)†, Pocock (1903), Rosenberg (2020), Shih et al. (2022), Simões et al. (2001)
Entries marked with † represent indirect references to location through citation.