Taye, S. . “AN EFFICIENT STRUCTURAL REANALYSIS MODEL FOR GENERAL DESIGN CHANGES AND BASED ON THE FLEXlBILlTY METHOD”. Zede Journal of Ethiopian Engineers and Architects, vol. 21, Jan. 2023, pp. 71-82, http://ejol.aau.edu.et/index.php/ZEDE/article/view/6512.