Naghizadeh, M. , , Ebrahimi, B. , and Pakseresht, S. . "TECHNOLOGY DEVELOPMENT RISK ASSESSMENT THROUGH THE DIFFERENT LAYERS OT TECHNOLOGY ROADMAP (CASE: DRILL BITS)", Journal of Technology Development Management, 4, 3, 2016, 151-175. doi: 10.22104/jtdm.2017.1827.1630