1. Ecology of the brontosaurs;Bakker;Nature, Lond.,1971
2. The alimentary canal and digestion;Barrington,1957
3. Der Magensaft der Vögel, Reptilien und Amphibien—XII. Die Ernährung der höheren Wirbeltiere;Biedermann,1911
4. A study of digestive phenomena in snakes, with the aid of the Roentgen ray;Blain;Am. J. Roentgen,1942