Citation: Armbruster, T.; Rothlisberger, F.; Seifert, F. (1990). Layer topology, stacking variation and site distortion in melilite-related compounds in the system CaO-ZnO-GeO2-SiO2 low-temperature polymorph Ca2ZnGe1.25Si.75O7. American Mineralogist, 75, pp. 847-858.