1. Late Pleistocene (Devensian) glaciofluvial outwash at Banc-y-Warren, near Cardigan (West Wales);Geol. J.,1982
2. Spec. Publ. Soc. Econ. Paleontol. Mineral.;Ashley,1975
3. Spec. Publ. Soc. Econ. Paleontol. Mineral.;Boothroyd,1975
4. Landforms and related glacial deposits in the Wheeler Valley area, Clwyd;Brown;Cambria,1977