Reda Taha, M.M., Xiao, S., Yi, J., and Shrive, N.G. “Evaluation of Flexural Fracture Toughness for Quasi-Brittle Structural Materials Using a Simple Test Method”, Canadian Journal of Civil Engineering, Vol. 29, No. 4, 2002, pp. 567–575.Link
Reda Taha, M.M., Xiao, S., Yi, J., and Shrive, N.G. “Evaluation of Flexural Fracture Toughness for Quasi-Brittle Structural Materials Using a Simple Test Method”, Canadian Journal of Civil Engineering, Vol. 29, No. 4, 2002, pp. 567–575.Link