Department of Physics, University of Helsinki, Helsinki, Czech Republic;
Regional Centre of Advanced Technologies and Materials, Departments of Physical Chemistry and Experimental Physics, Palacky University, Olomouc, Czech Republic;
Regional Centre of Advanced Technologies and Materials, Departments of Physical Chemistry and Experimental Physics, Palacky University, Olomouc, Czech Republic;
Czech Geological Survey, Prague, Czech Republic;
Regional Centre of Advanced Technologies and Materials, Departments of Physical Chemistry and Experimental Physics, Palacky University, Olomouc, Czech Republic;
Regional Centre of Advanced Technologies and Materials, Departments of Physical Chemistry and Experimental Physics, Palacky University, Olomouc, Czech Republic;