1. Roark, R. J. and Young, W. C., Formulas for Stress and Strain, Fifth edition, McGraw–Hill (1975). The first edition was published in 1938.
2. A first version: Peterson, R. E.: ‘Stress Concentration Design Factors’ was published by Wiley in 1953.
3. Griffel, W., Handbook of Formulas for Stress and Strain, Frederick Ungar Publishing Co., pp. 418 (1966).
4. Tetelman, A. S. and McEvily, A. J., Fracture of Structural Materials, Wiley (1967).
5. The first edition: Savin, G. N., Concentration of Stress Around Holes was published in 1951 by the State Publishing House of Technical Theoretical Literature. Trans. Pergamon Press (1961).