Józefaciuk G., Hoffmann C., Marschner B.:  Effect of extreme acid and alkali treatment on pore properties of soil samples. (2002 r.) Journal of Plant Nutrition and Soil Science 2002, 165, 59-66 

Hoffmann C., Savric I., Józefaciuk G., Hajnos M., Sokołowska Z., Renger M., Marschner B.:  Reaction of sewage farm soils to different irrigation solutions in a column experiment. 2. Heavy metals and their leaching. (2002 r.) Journal of Plant Nutrition and Soil Science 2002, 165, 67-71 

Sokołowska Z., Hajnos M., Hoffmann C., Renger M., Sokołowski S.:  Comparison of fractal dimensions of soils estimated from adsorption isotherms, mercury intrusion, and particle size distribution. (2001 r.) Journal of Plant Nutrition and Soil Science 2001, 164, 591-599 

Sokołowska Z., Hajnos M., Hoffmann C., Renger M., Sokołowski S.:  Surface fractal dimension of thermally treated peat soils from adsorption. (2000 r.) Journal of Plant Nutrition and Soil Science 2000, 163, 441-446 

Józefaciuk G., Hoffmann C., Renger M., Marschner B.:  Effect of extreme acid and alkali treatment on surface properties of soils. (2000 r.) Journal of Plant Nutrition and Soil Science 2000, 163, 595-601 

Hajnos M., Sokołowska Z., Józefaciuk G., Hoffmann C., Renger M.:  Effect of leaching of DOC on pore characteristic of sandy soil. (1999 r.) Journal of Plant Nutrition and Soil Science 1999, 162, 19-25 

Hoffmann C., Renger M., Hajnos M., Sokołowska Z., Józefaciuk G., Marschner B.:  Reactions of sewage farm soils to different irrigation solutions in a column experiment.1.Solid phase physicochemical properties. (1999 r.) Journal of Plant Nutrition and Soil Science 1999, 162, 653-659 

Sokołowska Z., Hajnos M., Józefaciuk G., Hoffmann C., Regner M.:  Influence of humic acid on water characteristics of kaolin and quartz. (1997 r.) Zeitschrift fur Pflanzenernahrung und Bodenkunde 1997, vol.160, 327-331