1. Geochemical characterization of Rocky Mountain, northern Great Plains, and Interior Province coals (abstract);Affolter;Bull., Am. Asoc. Pet. Geol.,1984
2. Sedimentary control on coal distribution in the northwestern Highveld Coalfield;Cadle,1982
3. Depositional framework and control of coal distribution and quality, Van Dyks Drift area, northern Karoo basin;Cairncross,1979
4. Anastomosing river deposits: palaeoenvironmental control on coal quality and distribution, northern Karoo Basin;Cairncross;Trans. Geol. Soc. S. Afr.,1980
5. Coarse-grained anastomosed river deposits from the Witbank Coalfield, South Africa;Cairncross,1982