Umweltbundesamt Austria (Federal Environment Agency Austria) & Univ.Vienna;
Spittelauer Laende 5;
A-1090 Vienna;
Austria;
Institute "Ruder Boskovic";
Bijenicka cesta 54;
10000 Zagreb;
Croatia;
Institute of Applied Geology;
Univ. of Natural Resources and Applied Life Sciences;
Vienna;