1. Soil erosion in the European community;Chisci;Balkema, Rotterdam,1986
2. Runoff and rill generation on sandy and loamy topsoils;De Ploey;Zeitschr. f. Geom., NF, Suppl. B.,1983
3. A consistency index and rainwash mechanics on Belgian loamy soils;De Ploey,1981
4. Bodemerosie in de Lage Landen, een Europees milieuprobleem;De Ploey,1986
5. Spatial and temporal variability in rill development processes at the Huldenberg experimental site;Govers;Catena Supplement,1987