Spoon-like crinoids from Štramberk (Lower Cretaceous, ČSSR). Jiří Žítt 1983 | volume 39 | issue 2 | pages 69–114 PDF
Spongophyllidae (Rugosa) of Bohemian silurian and devonian. A. Galle 1983 | volume 39 | issue 2 | pages 115–126 PDF
