1. Student, Laboratory of Soil Mechanics, Bauhaus-University Weimar; Coudraystrasse 11C, Weimar, Germany, 99421;.
2. ; formerly, Research Assistant; Laboratory of Soil Mechanics, Bauhaus-University Weimar; Coudraystrasse 11C, Weimar, Germany, 99421.
3. Professor, Laboratory of Soil Mechanics, Bauhaus-University Weimar; Coudraystrasse 11C, Weimar, Germany, 99421;.