1. American Society for Testing and Materials 1981 Standard definition of terms relating to acoustic emission, E610–77. 1981 Annual Book of ASTM Standards, Pt. 11: Metallography; Nondestructive Testing. ASTM, Philadelphia, PA, pp. 603–5
2. American Society for Testing and Materials 1981 Standard practice for acoustic emission monitoring during continuous welding, E749–80. 1981 Annual Book of ASTM Standards, Pt. 11: Metallography; Nondestructive Testing, ASTM, Philadelphia, PA, pp. 698–704
3. American Society for Testing and Materials 1981 Standard practice for acoustic emission monitoring during resistance spot welding, E751–80. 1981 Annual Book of ASTM Standards, Pt. 11: Metallography; Nondestructive Testing. ASTM, Philadelphia, PA, pp. 716–24
4. American Society for Testing and Materials 1981 Standard practice for measuring the operating characteristics of acoustic emission instrumentation, E750–80. 1981 Annual Book of ASTM Standards, Pt. 11: Metallography; Nondestructive Testing. ASTM, Philadelphia, PA, pp. 705–15
5. American Society for Testing and Materials 1981 Standard practice for mounting piezoelectric acoustic emission contact sensors, E650–78. 1981 Annual Book of ASTM Standards, Pt. 11: Metallography; Nondestructive Testing. ASTM, Philadelphia, PA, pp. 606–8