Norman, M., C. Spirig, V. Wolff, I. Trebs, C. Flechard, A. Wisthaler, R. Schnitzhofer, A. Hansel and A. Neftel: Intercomparison of ammonia measurement techniques at an intensively managed grassland site (Oensingen, Switzerland). In: Atmospheric Chemistry and Physics 9, 8, 2635-2645 (2009).
Spirig, C., A. Neftel, C. Ammann, J. Dommen, W. Grabmer, A. Thielmann, A. Schaub, J. Beauchamp, A. Wisthaler and A. Hansel: Eddy covariance flux measurements of biogenic VOCs during ECHO 2003 using proton transfer reaction mass spectrometry. In: Atmospheric Chemistry and Physics 5, 465-481 (2005).
Guazzotti, S. A., D. T. Suess, K. R. Coffee, P. K. Quinn, T. S. Bates, A. Wisthaler, A. Hansel, W. P. Ball, R. R. Dickerson, C. Neusüß, P. J. Crutzen and K. A. Prather: Characterization of carbonaceous aerosols outflow from India and Arabia: Biomass/biofuel burning and fossil fuel combustion. In: Journal of Geophysical Research 108, D15, Seq. No.: 4485 (2003).
doi: 10.1029/2002JD003277
Koppmann, R., J. Kesselmeier, F. X. Meixner, J. Warnke, R. Bandur, T. Hoffmann, S. Aubrun, B. Leitl, M. Schatzmann, R. Dlugi, M. Zelger, J. Kleffmann, A. Neftel, C. Ammann, C. Spirig, S. Otto, A. Hansel, A. Wisthaler, M. Graus, A. Weitz, B. Neininger and C. Thomas: Emission and Chemical Transformation of Biogenic Volatile Organic Compounds Investigations in and above a Mixed Forest Stand (ECHO): An Overview. In: Proceedings of Integrated Land Ecosystem – Atmosphere Processes Study (ILEAPS) International Open Science Conference 2003, 29 September - 3 October, Helsinki, Finland. Report Series in Aerosol Science (62A), (Eds.) Arneth, A.; Korhonen, H.; Kulmala, M.; Raivonen, M.; Ruuskanen, T.; Suni, T. Finnish Association for Aerosol Research, Helsinki (2003) 198-201.
Wisthaler, A., A. Hansel, R. R. Dickerson and P. J. Crutzen: Organic trace gas measurements by PTR-MS during INDOEX 1999. In: Journal of Geophysical Research 107, D19, Seq. No.: 8024 (2002).
doi: 10.1029/2001JD000576
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