1. Theory of Elasticity;Timoshenko,1970
2. Peterson's Stress Concentration Factors;Pilkey,1997
3. H. Neuber, Theory of Notch Stresses: Principle for Exact Calculation of Strength with Reference to Structural Form and Material, Oakridge, Tennessee, 1958.
4. Photoelasticity for Designers;Heywood,1969
5. Optimum hole shapes in finite plates under uniaxial load;Durelli;J. Appl. Mech.,1979