persistent URL: kreidefossilien.de/1610
Works belonging to the Public Domain (copyright expired) were digitized by projects like Google Books, archive.org and for natural scientific literature the Biodiversity Heritage Library (BHL) specificly. A lot of the material is widespreaded on different (hidden) databases. A list on free available e-books is provided here (Upper Cretaceous of NW-Europe, especially Saxony, Bohemia and the north German Basin).
A bibliography mainly related to the palaeontology of the Saxonian & Bohemian Cretaceous. It is based on a list created by Löser & Richter, 1989. A complete list, containing the geological literature as well (1749 until now) is available here.