1. Stuck-Die Entwick Lung Plastischer Dekoration;Beard,1983
2. Zapol BA, Cimermants H, Radzynshonok VS, Scredin IV, Panov VP. Gypsum binder, Otkrytiyka Izobret, Prom. Obraztsy, Toramery Znaki, vol. 7, 1983. p. 149–56
3. Schmidt H, Fietsch G, Grohamnn R, Gruem JH. Hydrophobic gypsum, Pfuetzener Peter, British Patent, February 1983
4. Singh M. Use of industrial by-products in the manufacture of cement and alternative binders, Indian Cement Review. In: Annual '92, July 1993. p. 119–28
5. Kassautzki M. Ger. Pat. DE 3743467, July 1989