1. Subsurface runoff;Anderson,1990
2. Piping as an erosion process in the uplands of Sarawak;Baillie;J. Trop. Geogr.,1975
3. The importance of mass movement in the Romanian sub-Carpathians;Balteanu;Z. Geomorphol. Suppl. Bd.,1986
4. Morphology and genesis of ‘pipe structure’ in ferralitic soils of Midnapore District, West Bengal;Banerjee;J. Indian Soc. Soil Sci.,1972
5. Piping in Milk River Canyon, southeastern Alberta, a contemporary dryland geomorphic process;Barendregt,1977