1. ASTM
(1998). Annual Book of ASTM Standards, Vol. 07.02, pp.
667-673,
American Society for Testing and Materials,
Philadelphia, PA
.
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(1998). Annual Book of ASTM Standards, Vol. 08.01, pp.
145-152,
American Society for Testing and Materials,
Philadelphia, PA
.
3. ASTM
(1998). Annual Book of ASTM Standards, Vol. 04.10, pp.
100-106,
American Society for Testing and Materials,
Philadelphia, PA
.