Template:Berger et al., 2021
- Berger, A., Valant-Vetschera, K., Schinnerl, J. & Brecker, L. 2021. A revised classification of the sister tribes Palicoureeae and Psychotrieae (Rubiaceae) indicates genus-specific alkaloid accumulation. Phytochemistry Reviews 21: 941–986 DOI: 10.1007/s11101-021-09769-x
