1. Studies on Cepaea VI. Climatic selection in Cepaea nemoralis (L.) in the Pyrenees;ARNOLD;Philosophical Transactions of the Royal Society of London, Series B,1968
2. Visual selection by tone of Cepaea nemoralis;CAIN;Journal of Conchology,1953
3. Studies on Cepaea V. Sand-dune populations of Cepaea nemoralis (L.);CAIN;Philosophical Transactions of the Royal Society of London, Series B,1968
4. The uniqueness of the polymorphism of Cepaea (Pulmonata: Helicidae) in Western Europe;CAIN;Journal of Conchology,1977