Nganga, P., Wakiru, J. and Muchiri, P. 2013. Maintenance Performance Optimization for Critical Subsystems in Cement Pre-Grinding Section: A Case Study Approach. International Journal of Industrial Engineering and Management. 14, 3 (Sep. 2013), 200–213. DOI:https://doi.org/10.24867/IJIEM-2023-3-333.