BioStor
 | Composition, Origin, and Affinities of the Madagascan Vascular Flora Jean-F Leroy (1978) Annals of the Missouri Botanical Garden 65: 535-589 |
 | The taxonomy and phylogeny of the genus Polyura Billberg (Lepidoptera: Nymphalidae) Robert L Smiles (1982) Bulletin of the British Museum (Natural History) Entomology 44(3): 115-237 |
 | A Combined Cladistic Analysis of Angiosperms Using rbcL and Non-Molecular Data Sets Owi I Nandi, Mark W Chase and Peter K Endress (1998) Annals of the Missouri Botanical Garden 85(1): 137-214 |