1. I.-W. Chen, P.F. Becher, M. Mitomo, G. Petzow, T.-S. Yen (Eds.), Silicon Nitride Ceramics: Scientific and Technological Advances, Materials Research Society Symposium Proceedings, vol. 287, MRS, Pittsburgh, 1993
2. M.J. Hoffmann, P.F. Becher, G. Petzow (Eds.), Silicon Nitride 93, Key Engineering Materials, Vol. 89–91, TransTech, Zurich, 1994
3. Microstructure of Y2O3 Fluxed Hot-Pressed Silicon Nitride
4. S. Hampshire, K.H. Jack, in: P. Popper, D.E. Taylor (Eds.), Special Ceramics 7, British Ceramic Society, Stoke on Trent, UK, 1981, p. 37
5. Microstructure and Grain-Boundary Composition of Hot-Pressed Silicon Nitride With Yttria and Alumina