WILHELM SCHICK, H. 2004. BIO- AND LITHOSTRATIGRAPHIC STUDY ON THE LOWER KIMMERIDGIAN OF THE SWABIAN AND FRANCONIAN ALB (GERMANY). RIVISTA ITALIANA DI PALEONTOLOGIA E STRATIGRAFIA . 110, 1 (Mar. 2004). DOI:https://doi.org/10.13130/2039-4942/6299.