1. MULLITIZATION OF KAOLINITE*
2. Crystallography and Thermal Transformations of Cronstedtite
3. 5. (a) S. O. Agrell, and J. V Smith , "X-Ray Crystallography of Mullite, Sillimanite, and Praguite ,"Intern. Congr. Crystallography, Fourth Congr., Montreal, 1957, Abstracts, p.32 .