1. 1J. T. Norton, and F. Benesovsky ; p.48, in Proceedings of the Second Plansee Seminar . Springer-Verlag, Vienna, 1956 .
2. 3W. Dawihl ; pp.153 -55, in A Handbook of Hard Metals . Her Majesty's Stationery Office, London, 1955 .
3. 4R. Bernard ; p.41 inRef.41 .
4. Thin Foils of WC–Co Hard Metal