1. De Romeinse wachtpost op de Goudsberg, Valkenburg aan de Geul (Limburg);Bazelmans;Historische en Heemkundige Studies in en rond het Geuldal,2004
2. Palaeogeographic development of the Rhine–Meuse delta;Berendsen,2001
3. Channelized rivers: Perspectives for environmental management;Brookes,1988
4. Slope erosion and colluviation at the floodplain edge;Brown,1992
5. Fluvial evidence of the medieval warm period and the Late Medieval climatic deterioration in Europe;Brown,1998