1. Bell, R.L. ‘Acoustic emission transducer calibration: transient pulse method'. National Fall Conference, Cleveland, ASNT, (October 1972). Dunegan/Endevco Technical Report DE73–3, (February 1973).
2. ‘Acoustic emission – a bibliography with abstracts'.;Drouillard,1979
3. ‘AE Literature’;Drouillard;Journal of Acoustic Emission,1982
4. Summerscales, J. ‘The mechanical properties of carbon fibre with glass fibre hybrid reinforced plastics'. Doctoral thesis, CNAA-Plymouth Polytechnic, (May 1983). BLLD D50187/84. NTIS N84–31292.
5. Vary, A. ‘Acousto-ultrasonic characterisation of fibre reinforced composites'. Technical Memorandum NASA-TM-82651, (1981). NTIS N81–28458. Critical Review of Techniques for the Characterisation of Composite Materials, Cambridge-MA, Office of Naval Research, (June 1981). AMMRC-MS-82–3, (May 1982). NTIS AD-A116–733.