1. D. Biggins(1969 ) The structure, sedimentology and palaeoecology of a Carboniferous reef knoll at High Tor, Derbyshire, Unpublished Ph.D. Thesis , University of London.
2. Petrology of palaeosols and other terrestrial sediments on Aldabra, Western Indian Ocean
3. M.C. Brown(1973 ) Limestones of the eastern side of the Derbyshire outcrop of the Carboniferous Limestone, Unpublished Ph.D. Thesis , University of Reading.