Roman Boča - Departments of Inorganic and Physical Chemistry, Slovak Technical University, SK-812 37 Bratislava, Slovakia
Mária Hvastijová - Departments of Inorganic and Physical Chemistry, Slovak Technical University, SK-812 37 Bratislava, Slovakia
Jozef Kožíšek - Departments of Inorganic and Physical Chemistry, Slovak Technical University, SK-812 37 Bratislava, Slovakia
Marián Valko - Departments of Inorganic and Physical Chemistry, Slovak Technical University, SK-812 37 Bratislava, Slovakia