Affiliation: | 1Assistant Professor of Civil Engineering, Sakarya Univ., Muh. Fak. Ins. Muh. Bol., Sakarya 54187, Turkey. 2University Distinguished Professor, Dept. of Civil and Environmental Engineering, Virginia Polytechnic Institute, Blacksburg, VA 24061-0105. 3Emeritus Professor, Dept. of Civil and Environmental Engineering, Virginia Polytechnic Institute, Blacksburg, VA 24061-0105.
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