1. Role of clay minerals in the transportation of iron;Carroll;Geochim. et Cosmochim. Acta,1958
2. The origin of some strata-bound sulfide ore deposits;Davidson;Discussion Econ. Geol.,1962
3. Further remarks on biogenic Sulfides;Davidson;Discussion Econ. Geol.,1962
4. Environmental studies of Carboniferous sediments. Part 1. Geochemical criteria for differentiating marine and fresh water shales;Degens;Bull. Amer. Assoc. Petrol. Geol.,1957
5. Environmental studies of Carboniferous sediments, Part 2: Application of geochemical criteria;Degens;Bull. Amer. Assoc. Petrol. Geol.,1958