1. Grellmann W., Seidler S. (1992): J-Integral Analysis of Fibre-Reinforced Injection Moulded Thermoplastics. Journal of Polymer Engineering 11: 71–101
2. ASTM E813 — 89 (1989): Standard Test Method for J
Ic, A Measure of Fracture Toughness.
3. ASTM E1290E1- 93 (1993): Crack-Tip Opening Displacement (CTOD) Fracture Toughness Measurement.
4. ASTM E1152 — 87 (1987): Standard Test Method for Determining J-R Curves.
5. ESIS-Procedure P2–91D (1991): Procedure for Determining the Fracture Behaviour of Materials.