Paper published in a book (Scientific congresses and symposiums)
Orchidaceae du district phytogéographique du Haut-Katanga (Zaïre): Biodiversité et endémisme
Geerinck, D.; Malaisse, François; Schaijes, M.
1994 • In Maesen, Laurentius Josephus Gerardus van der; Burgt, Xander M. van der; Medenbach de Rooy, J. M. van (Eds.) The biodiversity of african plants : Proceedings XIVth AETFAT Congress 22–27 August 1994, Wageningen, The Netherlands