selected publications academic article Microbiological Condition of Urban Groundwater in the Vicinity of Leaky Sewer Systems. Acta hydrochimica et hydrobiologica. 32:351-360. 2004 chapter Field Screening of Transport Characteristics in Unsaturated Fractured Porous Rock by Gas Tracer Testing. . 2002 Soil-Gas Investigations for the Deliniation of VOC Contaminations in the Subsurface. . 2002 Possibilities and Limitations of Surface Covering Systems for Waste Sites. . 1988