1. 1) Santiago, S. D. and Hilsdorf, H. K.: Fracture mechanisms of concrete under compressive loads, Cement and Concrete Research, Vol. 3, pp. 363-388, 1973.
2. 2) Markeset, G.: Failure of concrete under compressive strain gradients, Dr. Eng thesis 1993:110, Norwegian Institute of Technology, Trondheim, 1993.
3. 3) Nakamura, H. and Higai, T.: Compressive fracture energy and fracture zone length of concrete, JCI-C 51E Seminar on Post-Peak Behavior of RC Structures Subjected to Seismic Loads, Vol. 2, pp. 259-272, Oct. 1999.
4. 4) Lertsrisakulrat T., Watanabe K., Matsuo M. and Niwa J.: Localization Effects and Fracture Mechanics of Concrete in Compression, Proceedings of the Japan Concrete Institute, Vol. 22, No. 3, pp. 145-150, 2000.
5. 5) Lertsrisakulrat, T., Watanabe K., Matsuo M. and Niwa J.: Experimental study on parameters in localization of concrete subjected to compression, Journal of Materials, Concrete Structures and Pavements, JSCE, No. 669/V-50, pp. 309-321, Feb. 2001.