Rosabelle Samuel, Walter Gutermann, Tod F. Stuessy, Claudete F. Ruas, Hans-Walter Lack, Karin Tremetsberger, Salvador Talavera, Barbara Hermanowski & Friedrich Ehrendorfer (2006). «Molecular phylogenetics reveals Leontodon (Asteraceae, Lactuceae) to be diphyletic». American Journal of Botany93 (8): 1193-1205. PMID21642184. doi:10.3732/ajb.93.8.1193.
Rosabelle Samuel, Walter Gutermann, Tod F. Stuessy, Claudete F. Ruas, Hans-Walter Lack, Karin Tremetsberger, Salvador Talavera, Barbara Hermanowski & Friedrich Ehrendorfer (2006). «Molecular phylogenetics reveals Leontodon (Asteraceae, Lactuceae) to be diphyletic». American Journal of Botany93 (8): 1193-1205. PMID21642184. doi:10.3732/ajb.93.8.1193.