1. By-product Gypsum from Various Chemical Industries, as a Retarder for the Setting of Cement;Murakami,1968
2. Phosphogypsums — Binders and Building Materials;Osiecka,1980
3. Utilization of Phosphogypsum in Poland;Jarosiński;Szklo i Ceramika,1993
4. Influence of Some Set Accelerating Admixtures on the Hydration of Portland Cement Containing Phosphogypsum;Yilmaz;Advances in Cement Research,1993
5. Phosphogypsum — Polish and World Problem;Jarosiński;Szklo i Ceramika,1992