1. M. Alexander, Data from tests on notched concrete beams, private communication to Karihaloo and Nallathambi (see Ref. [54]), University of Witwatersrand, Johannesburg, 1987.
2. A simple test of fracture toughness;Barr;Concrete,1976
3. The effect of test specimen size on the fracture toughness of concrete;Barr;Cem. Concr. Res.,1985
4. Fracture toughness testing by means of the compact compression test specimen;Barr;Mag. Concr. Res.,1985
5. A. Bascoul, private communication to Karihaloo and Nallathambi (see Ref. [54]), University of Paul-Sabatier, Toulouse, France, 1987.