Kaizen event háttéranyag
https://www.routledge.com/The-Kaizen-Event-Planner-Achieving-Rapid-Improvement-in-Office-Service/Martin-Osterling/p/book/9781563273513
https://www.routledge.com/The-Kaizen-Event-Planner-Achieving-Rapid-Improvement-in-Office-Service/Martin-Osterling/p/book/9781563273513