Balss (1922)†, Boone (1934)†, Crane (1975)†, Gee (1925), Kellogg (1928), Liu et al. (2014), Naderloo et al. (2010)†, Rosenberg (2020)†, Serène (1973)†, Shen (1940)†, Shih et al. (2010), Stimpson (1907), Tang et al. (2007), Xiao et al. (2022)
Entries marked with † represent indirect references to location through citation.