1. The Demand Planning Process in executive S&OP;wallace;The Journal of Business Forecasting,2008
2. A new trend to solve imventory problems-S&OP(in Japanese);kajita;LOGI-BIZ,2012
3. Patrick Bower: How the S&OP Process Creates Value in the Supply Chain;The Journal of Business Forecasting,2006
4. 10 Proven Steps to Successful S&OP;john;The Journal of Business Forecasting,2009
5. Understanding the S&OP process at “Teishokuya “(in Japanese);kyoshiro;IT Leaders,2013