White, M., Garcia Alcaraz, J. L., Hernandez, J. A. and Meza Jimenez, J. (2009) “Cycle Time Improvement by a Six Sigma Project for the Increase of New Business Accounts”, International Journal of Industrial Engineering: Theory, Applications and Practice, 16(3), pp. 191–205. doi: 10.23055/ijietap.2009.16.3.265.