1. Phase equilibria in the system CaCO3–MgCO3–FeCO3;Anovitz;J. Petrol.,1987
2. Geology and mineral resources of carbonatites;Bai,1985
3. Demonstration on the Geological Features and Genesis of the Bayan Obo Ore Deposit;Bai,1996
4. Field relations of carbonatites;Barker,1989
5. High-Ca, low-alkali carbonatite volcanism at Fort Portal, Uganda;Barker;Contrib. Mineral. Petrol.,1989