@article{JCGS.943, title={Clasts of volcanic rocks from the Viscan conglomerates in the Drahany Culm: Evidence for a volcanic arc on the eastern margin of Bohemian Massif} author={Zachovalov\'{a} and Leichmann, Jarom\'{i}r}, journal={Journal of the Czech Geological Society}, volume={48}, number={1-2}, pages={139--0}, year=2003, publisher={Czech Geological Society} }