1. RECETOX (Research Centre for Toxic Compounds in the Environment), Kamenice
753/5, CZ-625 00 Brno, Czech Republic
2. Czech Hydrometeorological Institute, Doksany Observatory, 411 82 Doksany 105,
Czech Republic
3. Norwegian Institute for Water Research, Gaustadalleen 21, NO-0349, Oslo,
Norway