Chapter 7.2.1. Upper Carboniferous, Pennsylvanian In Cháb J., Breiter K., Fatka O., Hladil J., Kalvoda J., Šimůnek Z., Štorch P., Vašíček Z., Zajíc J. & Zapletal J.(2010): Outline of the Geology of the Bohemian Massif: the Basement Rocks and their Carboniferous and Permian Cover: 183–185