Algemene plante in die Rehoboth Streek = Common plants in the Rehoboth Area:veld gids vir plaasboere Wesuls, Dirk Naumann, Christiane Limpricht, Cornelia 2009 - Forschungsinformationssystem der UHH
Diversity measures in comparative rangeland studies:application and advantages of SADs and diversity profiles Oldeland, Jens Dreber, Niels Wesuls, Dirk 2009 - Forschungsinformationssystem der UHH