1. Biostratigraphical criteria for the recognition of the Coniacian to Maastrichtian stage boundaries in the Chalk of north-west Europe, with particular reference to southern England;Bulletin of the Geological Society of Denmark,1984
2. Barrois C. 1876. Recherches sur le Terrain Crétacé Supérieur de l’Angleterre et de l’lrlande. Lille, 232pp.
3. On The Chalk of Yorkshire
4. The zones of the Lower Chalk of Lincolnshire
5. Notes on the Middle and Upper Chalk of the Cambridge District