1. Institute
for Technical Chemistry and Environmental Chemistry (ITUC), Friedrich-Schiller University Jena, Lessingstraße 12, D-07747 Jena, Germany
2. Institute
for Particle Technology (IPAT), Technical University Braunschweig, Volkmaroder Straße 5, D-38104 Braunschweig, Germany
3. Institute
of Geotechnics, Slovak Academy of Sciences, Watsonova 45, 04001 Košice, Slovac Republic