Opiyo, E. Z. “REVIEW OF THE PRODUCT DEVELOPMENT PROCESS AND INFORMATION FLOW IN THE MANUFACTURING INDUSTRY: PROBLEMS AND POSSIBLE WAY FORWARD”. Tanzania Journal of Engineering and Technology 27, no. 1 (August 8, 2018). Accessed April 7, 2026. http://196.44.161.124/index.php/tjet/article/view/1997.