1. The vertical electric current during continuous rain and snow
2. Measurements on the electricity of precipitation
3. 1956 ‘Results of two years synoptic atmospheric-electric recordings at seven mountain stations, between 700 and 3,000 m above sea level,’ Tech. Rep., Munich, Contract AF (514) 732-C.
4. 1958 ‘Behaviour of atmospheric-electric magnitudes recorded simultaneously at seven stations between 700 and 3,000 m above sea level: results of analysis of the fine and disturbed weather data, with special attention being given to precipitation and its nitrate and nitrite ion content,’ Tech. Rep., Contract AF61 (514)-949.