1. Pilkey, W.D., Peterson’s Stress Concentration Factors (2nd Ed.). New York: John Wiley and Sons, 1997.
2. Young, W.C. and Budynas R.G., Roark’s Formulas for Stress and Strain (7-th Ed.). New York: McGraw-Hill, 2002.
3. Peterson, R.E., Notch Sensitivity in Metal Fatigue. New York: McGraw-Hill, 1959.
4. Savin, G.N., Stress Concentration around Holes. New York: Academic Press, 1951.
5. Heller, S.R., Brock, J.S. and Bart, R., The stresses around a rectangular opening with rounded corners in a uniformly loaded plate. In: Proceedings of the Third US National Congress of Applied Mechanics, ASME, 1958, 357–368.