1. Ionicon Analytik GmbH, Eduard-Bodem-Gasse 3, 6020 Innsbruck, Austria
2. Institute of Ecology, University of Innsbruck, Sternwartestrasse 15, 6020
Innsbruck, Austria
3. Institute
of Ion Physics and
Applied Physics, University of Innsbruck, Technikerstrasse 25, 6020 Innsbruck, Austria
4. National Research Council, Institute for Plant Protection (CNR-IPP), Via Madonna
del Piano 10, 50019 Sesto
Fiorentino, Firenze, Italy