Hüttl, Reinhard F. J. Deutsches GeoForschungsZentrum;
Vetterlein, D. External Organizations;
,
Hüttl, R. F. J., Vetterlein, D. (1999): Preface. - Plant and Soil, 213, 1-2, 7.https://doi.org/10.1023/A:1017122420987