1. W. Wersing in: B.C.H. Steele (Ed.), Electronic Ceramics, Elsevier Applied Science, New York, 1991 (Chapter 4).
2. Microwave ceramics for resonators and filters
3. T. Negas, G. Yeager, S. Bell, R. Amren, in: P.K. Davies, R.S. Roth (Eds.), Chemistry of Electronic Materials, NIST Spec. Pub. 804, US Government Printing Office, Washington, DC, 20402, 1991, pp. 21–34.
4. P.K. Davies, in: T. Negas, H. Ling, (Eds.), Materials and Processes for Wireless Communications, American Ceramic Society, Westerville, OH, 1995, pp. 137–151.
5. Dielectric materials for applications in microwave communications