Waras, Mochamad, and Wiwik Sulistyowati. “Implementation of Lean Six Sigma in an Effort to Reduce the Failure of the Pipe Quality Load Test”. Procedia of Engineering and Life Science 1, no. 2 (July 8, 2021). Accessed July 27, 2024. https://pels.umsida.ac.id/index.php/PELS/article/view/933.