6Iv. Gruncharov,Y. Pelovski,G. Bechev,Iv. Dombalov,Pl. Kirilov. Effects of some admixtures on the decomposition of calcium sulphate[J] 1988,Journal of Thermal Analysis(3):597~602
7Iv. Gruncharov. An investigation on the effects of additives during the thermochemical decomposition of phosphogypsum under isothermal conditions[J] 1987,Journal of Thermal Analysis(6):1739~1742