1. Tidd PFBC Demonstration Plant Project Report—First Three Years of Operation: Initial Start-up Through February 28, 1994;American Electric Power,1994
2. Close, M.R. and Smith, D.H. (in preparation).
3. Mg2Ca(SO4)3: Correct Stoichiometry of the Compound Previously Reported as Mg3Ca(SO4)4
4. A Study of Hazardous Air Pollutants at the Tidd PFBC Demonstration Plant;Radian Corporation;Report No. DCN 94-633-021-03,1994
5. The ternary system K2SO4MgSO4CaSO4