Template:Calviño et al., 2014
- Calviño, C.I., Fernandez, M. & Ezcurra, C. 2014. Is the southern South American genus Tweedia (Apocynaceae: Asclepiadoideae) monophyletic? Molecular phylogenies, distribution and taxonomy. Taxon 63(6): 1265-1274. DOI: 10.12705/636.35 Full text PDF from ResearchGate