I have spent many hours online trying to download a paper/presentation about a successful/unsuccessful implementation of Six Sigma in an inventory management system – workshop & warehouse on one side, unsatisfied customer on another.
After downloading a paper No. 100, I thought it needed another approach. Many users seems to be active in this forum. I would appreciate any feedback. Could you help, please?
(Basically, I found just one paper suitable for my project: https://www.sciencedirect.com/science/article/pii/S0959652619300514)