1. Origin of the Hastings Facies in northwestern Europe;Allen,1967
2. The “Wealden” of northwest Germany and its English equivalents;Anderson;Nature,1964
3. Jurassic Geology of the World;Arkell,1956
4. Spores and pollen characteristic of Cretaceous deposits in the central regions of the U.S.S.R.;Bolchovitina;Tr. Inst. Geol. Nauk, Akad. Nauk. S.S.S.R., Ser. Geol.,1953
5. Révision du genre Classopolis Pflug;Boltenhagen;Rev. Micropaléontol.,1968