1. Bieber CG, Suffern, Galka JJ (1969) United States Patent Office, No: 3459545, August 1969
2. Mukherji D, Jiao F, Chen W, Wahi RP (1991) Acta Metall Mater 39:1515
3. Li J, Wahi RP, Chen H, Chen W, Wever H (1993) Z Metallkunde 84:268
4. Li J, Wahi RP (1995) Acta Metall Mater 43:507
5. Wang Y, Mukherji D, Chen W, Kutter T, Wahi RP, Wever H (1995) Z Metallkunde 86:365