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Ameka, G K; Ghogue, J P; Rutishauser, R (2010). Podostemaceae research in Africa (including Madagascar): state of the art and open questions. In: van der Burgt, X. Systematics and conservation of African plants. Richmond: Royal Botanic Gardens Kew, 585-595.
Ghogue, J P; Ameka, G K; Grob, V; Huber, K A; Pfeifer, E; Rutishauser, R (2009). Enigmatic morphology of Djinga felicis (Podostemaceae-Podostemoideae), a badly known endemic from northwestern Cameroon. Botanical Journal of the Linnean Society, 160(1):64-81.