1. American Association of State Highway and Transportation Officials (AASHTO), 2001. MP1a Standard specification for determining low-temperature performance grade of asphalt binders.
2. American Association of State Highway and Transportation Officials (AASHTO), 2009. R49-09 determination of low – temperature performance grade (PG) of asphalt binders.
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4. American Association of State Highway and Transportation Officials (AASHTO), 2018. TP113-15 standard method of test for determination of asphalt binder resistance to ductile failure using double-edge-notched tension (DENT) test.
5. American Society for Testing and Materials (ASTM), 2002. D113-07 standard test method for ductility of bituminous materials.