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Lucia Kořenková
Comenius University, Faculty of Natural Sciences, Institute of Laboratory Research on Geomaterials, Mlynská dolina, 842 15 Bratislava, Slovak Republic, phone: +421-2-60296291
Martin Urík
Comenius University, Faculty of Natural Sciences, Institute of Laboratory Research on Geomaterials, Mlynská dolina, 842 15 Bratislava, Slovak Republic, phone: +421-2-60296291