1. Contributions to the Crustacean fauna of South Africa. 6;Barnard;Ann. So. Afric. Mus.,1920
2. Nutrient elements;Barnes;Mem. Geol. Soc., Amer. 67,1957
3. Bryozoa;Bassler,1953
4. Paleotemperatures and the origin of abyssal fauna;Birstein;Priroda,1959