1. Barney G. Shiu K. Rabbat B. Fiorato A. Russell H. and Corley W. "Earthquake Resistant Structural Walls - Tests of Coupling Beams " Construction Technology Laboratories Report Portland Cement Association January 1978.
2. Bristowe S. "Seismic Response of Normal and High Strength Concrete Members " Ph.D. Dissertation. Civil Engineering and Applied Mechanics McGill U. Montreal Canada 2000.