Fangmeir A, Hadwiger-Fangmeir A, Van der Eerden LJM, Jager HJ. Effects of atmospheric ammonia on vegetation - a review. Environmental Pollution. 1994  ;86:43-82.

Grunhage L, Dammgen U, Haenel HD, Jager HJ, Holl A, Schmitt J, Hanewald K. A new potential air-quality criterion derived from vertical flux densitites of ozone and from plant response. Angewandte Botanik. 1993  ;67:9-13.

Adaros G, Weigel HJ, Jager HJ. Concurrent exposure to SO2 and/or NO2 alters groweth and Yield responses of wheat and barley to low concentrations of O3. New Phytologist. 1991  ;118(4):581-591.

Adaros G, Weigel HJ, Jager HJ. Single and Interactive Effects of Low Levels of O3, SO2 and NO2 on the Growth and Yield of Spring Rape. Environmental Pollution. 1991  ;72:269-286.

Weigel HJ, Adaros G, Jager HJ. Yield Responses of Different Crop Species to Long-Term Fumigation with Sulphur Dioxide in Open-Top Chambers. Environmental Pollution. 1990  ;67:15-28.