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3. 3) Yokobori, T. (1965) Strength, Fracture and Fatigue of Materials. Wolters-Noordhoff Scientific Publications Ltd., Groningen (English edition of Strength of Materials (1955), Gihodo Shuppan, Tokyo).
4. 4) Yokobori, T. (1968) An Interdisciplinary Approach to Fracture and Strength of Solids. Wolters-Noordhoff Scientific Publications Ltd., Groningen (English edition of Strength of Materials (1964, Iwanami Shoten, Tokyo).
5. 5) Kanninen, M.F. and Popelar, C.H. (1985) Advanced Fracture Mechanics (Oxford Engineering Science Series 15). Oxford University Press, New York, NY.