Methods of soil investigations for agricultural engineering – Physical laboratory tests – Part 9: Determination of the saturated hydraulic water conductivity in the cylindrical core-cutter
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 05/01/1998

Soil quality – Physical laboratory tests – Part 9: Determination of the saturated hydraulic water conductivity in the cylindrical core-cutter
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 07/01/2012