1. Photoelastic stress analysis for an edge crack in a tensile field;Post,1954
2. Isopachic patterns and principal stresses in bars with deep notches in tension;Frocht,1956
3. The dynamic stress distribution surrounding a running crack—a photoelastic investigation;Wells,1958
4. Photoelasticity and photoplasticity;Hetényi,1958
5. Fracture mechanics;Irwin,1958