1) Anderson,T.l.: Fracture mechanics. Fundamentals and Applications. 2nd.ed.CRC
Press, Boca Raton, New York 1995
2) Broek,D.: Elementary Engineering Fracture Mechanics. Martinus Nijhoff
Publisher, 1984
3) Murakami,Y.: Stress Intensity Factors Handbbok. In two volumes. Pergamon
Press 1990.