1. ASTM, D 1857–68.
2. High-Temperature Corrosion Studies in an Oil-Fired Laboratory Combustor
3. Formation of SO3 in a Noncatalytic Combustor
4. BCURA Annu. Rep. (1966). p. 7.
5. Buckland, B. O., Gardiner, C. M., and Sanders, D. G. (1952). ASME Paper 52-A-161.