1. C. B. BUCKNALL, “Toughened Plastics” (Applied Science, London 1977).
2. S. K. GAGGAR, “Instrumented Impact Testing of Plastics and Composite Materials”, edited by S. L. KESSLER, G. C. ADAMS, S. B. DRISCOLL and D. R. IRELAND (ASTM 6, Baltimore 1987) p. 236.
3. N. S. KAKARALA, J. L. ROCHE, p. 144.
4. ASTM D256-84 Standard.
5. ISO 179 Standard, ISO 180 Standard.