TY - JOUR TI - Optimum design of nonlinear steel space frames via tabu search method AU - DEÄžERTEKİN, S.Ã. AU - HAYALİOÄžLU, M.S. AU - ÜLKER, M. JO - Sigma Journal of Engineering and Natural Sciences PY - 2006 VL - 24 SP - 117 EP - 128 DO - ER -