Reference
- J. KRAUTKRÄMER: Arch. Eisenhiittenwes., 1959,30,693–703.
- J. KRAUTKRÄMER and H. KRAUTKRÄMER: 'Ultrasonic testing of materials', 51; 1969, Berlin/Heidelberg, Springer-Verlag.
- W. KNORR and H. G. RICKEN: Arch. Eisenhfittenwes., 1962, 33, 317–326.
- L. K. L. TU and B. B. SETH: 'Fracture 1977', Vol. 3, (ed. W. R. Taplin), 555–563; 1977, Waterloo, Ont., University of Waterloo Press.
- L. K. L. TU and B. B. writ: J. Test. Eval., 1977,5, (5), 361–368.
- J. M. COFFEY: 'Tolerance of flaws in pressurised components', 63–70; 1978, London, Institution of Mechanical Engineers.
- H. WUSTENBERG and J. KUTZNER: Paper presented at Eighth World Conf. on Non-destructive Testing, Cannes, 1976.
- H. J. MEYER, W. PRESTEL, and D. HEINRICH: Paper presented at Int. Symp. Non-destructive Testing, Sarajevo, Yugoslavia, 1978.