1. American Society for Testing and Materials, ASTM STP 381 (1965).
2. American Society for Testing and Materials, ASTM STP 410 (1966).
3. J. E. Srawley and W. F. Brown, Jr., ASTM STP 381 (1965) 133–196.
4. H. W. Liu, ASTM STP 381 (1965) 23–26.
5. W. M. Beebe, AFML-TR-66-249 (November 1966).