1. Yamanouchi M, Koizumi M, Hirai T, Shiota I. Proceedings of the First International Symposium on Functionally Gradient Materials. Japan, 1990.
2. Functionally gradient materials the concept of FGM;Koizumi;Ceramic Transactions,1993
3. Fabrication and microstructure of ZrO2–Ni functional gradient material by powder metallurgy;Zhu;Journal of Materials Science,1996
4. Fabrication of functionally gradient material by slurry stacking and sintering process;Yamaoka;Ceramic Transactions, Functionally Gradient Materials,1993
5. Powder processing of Ni–Al2O3 FGM;Rabin;Ceramic Transactions, Functionally Gradient Materials,1993