Sławiński C., Sobczuk H., Stoffregen H., Walczak R., Wessolek G.:  Effect of data resolution on soil hydraulic conductivity prediction. (2002 r.) Journal of Plant Nutrition and Soil Science 2002, 165, 45-49 

Wessolek G., Sławiński C., Sobczuk H., Stoffregen H., Walczak R.:  Determination of unsatureted hydraulic conductivity of soil with different resolution of input data. (2000 r.) International Conference "Physical Methods in Agriculture" (Book of abstracts), Prague, Czech Republic, 27-30.08.2001 2001, 258-259