Citation: Um. Hertling et Ra. Lubke, Assessing the potential for biological invasion - the case of Ammophila arenaria in South Africa, S AFR J SCI, 96(9-10), 2000, pp. 520-527
Citation: Um. Hertling et Ra. Lubke, Use of Ammophila arenaria for dune stabilization in South Africa and its current distribution - Perceptions and problems, ENVIR MANAG, 24(4), 1999, pp. 467-482