1. Conference on the role of education in non-destructive evaluation;Gardner;NTIAC newsletter,1978
2. Current limitations of non-destructive testing in engineering;Sharpe;Phil Trans Roy Soc Lond,1979
3. The BNC for NDT—A success story over two decades;Metals and Materials,1980
4. Certification of NDT personnel in Britain, British Institute of NDT, Northampton (1980)