Taner, M. T., Kagan, G., Celik, S., Erbas, E., & Kagan, M. K. (2013). Formation of Six Sigma Infrastructure for the Coronary Stenting Process. International Review of Management and Marketing, 3(4), 232–242. Retrieved from https://econjournals.org.tr/index.php/irmm/article/view/624