Abele & Kim (1986)†, Almeida et al. (2008)†, Chace & Hobbs (1969), Crane (1957), Crane (1975)†, Domínguez Alonso (2008), Felder et al. (2009)†, Fowler (1912)†, Kingsley (1880)†, Ortmann (1897)†, Powers (1977), Rosenberg (2020), Smith (1870), Thurman (1979)†, von Martens (1869), Young (1900)
Entries marked with † represent indirect references to location through citation.