Azandi, L., T. Stévart, B. Sonké, M. Simo-Droissart, T. D’haijère, and V. Droissart. “Taxonomic Description and Pollination Ecology of Cyrtorchis Okuensis (Orchidaceae, Angraecinae), a New Species Endemic to the Cameroon Volcanic Line”. Plant Ecology and Evolution, Vol. 154, no. 3, Nov. 2021, pp. 483-96, doi:10.5091/plecevo.2021.1823.