Ketema, Erimiyas, and Shifferaw Taye. 2023. “PREPARATION OF UNlXAIAL CIIART FOR RECTANGULAR CONCRETEFILLED STEEL COLUMNS BASED ON RIGID PLASTIC PRINCIPLES”. Zede Journal of Ethiopian Engineers and Architects 22 (January):11-24. http://ejol.aau.edu.et/index.php/ZEDE/article/view/6517.