1. Crystallisation of gypsum from phosphoric acid solution;White,1990
2. Crystallization of calcium sulphate during the interaction of monocalcium phosphate with sulphuric acid in phosphorique acid;Pozin;Zh. Prikl. Khimii,1961
3. Physico-chemical background of phosphoric acid manufacture by wet processes;Dahlgren;Acta Phys.,1960
4. Continuous recrystallization of calcium sulfate dihydrate to the hemihydrate in the phosphoric acid wet process;Torocheshnikov;Zh. Prikl. Khimii,1986
5. Procédé de fabrication d'acide concentré par double cristallisation;Frochen;Inf. Chimie,1973