1. Petrogenesis of Metamorphic Rocks;Winkler,1974
2. Optische Bestimmung der gesteinsbildenden Minerale;Tröger,1969
3. The mullite-type family of crystal structures;Fischer,2005
4. Mullite-type gels and glasses;Schmücker,2005
5. Formation of aluminum rich 9:1 mullite and its transformation to low alumina mullite upon heating;Fischer;J. Eur. Ceram. Soc.,1996