ZIMÁK, Jiří and
Jindřich ŠTELCL. Natural radioactivity of rocks in the Zbrašov Aragonite Caves (Hranice Karst, Czech Republic).
Acta Universitatis Palackianae Olomucensis, Facultas Rerum Naturalium, Geologica. Olomouc: Univerzita Palackého, 2003, vol. 38, No 1, p. 39-43. ISSN 1212-2025.