1. Leimen, Influence of various retarders on the crystallization and strength of plaster of Paris;Forg;Zement-Kalk-Gips,1989
2. Illertissen;Mallon;Zement-Kalk-Gips,1988
3. Gypsum plaster for use in the manufacture of fibrous plaster boards,1976
4. Methods of test for gypsum plaster, concrete and products, Part 1 — Plaster and Concrete,1978
5. Retardation of Gypsum Plaster by Calcium Tartrate