1. 1985 report: Radon in Wohnungen und im Freien — Erhebungsmessungen in der Bundesrepublik Deutschland;BMI (Bundesminister des Innern),1985
2. Environmental radon,1987
3. A small-diameter probe for in situ measurements of gas permeability of soils;Damkjær;Radiat. Prot. Dosim.,1992
4. Form and behavior of radium, uranium, and thorium in Central Pennsylvania soils derived from dolomite;Greeman;Geophys. Res. Lett.,1990
5. Protection against radon-222 at home and at work;ICRP (International Commission on Radiological Protection),1993