1. Soil as a source of indoor radon: generation, migration and entry. In: Radon and Its Decay Products in Indoor Air (W. W. Nazaroffand A. V. Nero, Jr., Eds.), John Wiley;Nazaroff W. W.;New York,1989
2. NAS. Pesticides and Groundwater Quality. Issues and Problems in Four States. National Academy of Sciences Washington DC 1986.
3. Vrba J. and Romijn E. Impact of Agricultural Activities on Groundwater Vol. 5. International Association of Hydrogeologists Heise Publishing Hanover Germany 1986.
4. Nielsen E. G. and Lee L. K. The Magnitude and Costs ofGroundwater Contamination from Agricultural Chemicals: A National Perspective. Agricultural Economic Report No. 576. Resources and Technology Division Economic Research Service U.S. Department of Agriculture Washington DC 1987.
5. Consequences and treatment of groundwater pollution by crude oil. In: Advances in Organic Geochemistry (H. R. Von Gaertner, Ed.), Pergamon Press;Kass W;Oxford,1972