1. TQC AT TOYOTA, actual state of quality control activities in Japan. The 19th quality control study team of Europe;Amasaka;Union of Japanese Scientists and Engineers,1989
2. A study on “Science SQC” by utilizing “Management SQC”;Amasaka;Journal of Production Economics,1997
3. Amasaka, K., 1999. Proposal and implementation of the “Science SQC” quality control principle. Proceedings of the First Western Pacific/Third Australia–Japan Work Shop on Stochastic Models, Christchurch, New Zealand, September 24, 1999, pp. 7–16.
4. Amasaka, K., 2000a. “TQM-S” a new principle for TQM activities—a new demonstrative study on “Science SQC”. Proceedings of the International Conference on Production Research, Bangkok, Thailand August 3, 2000, pp. 1–6 (CD-ROM).
5. Amasaka, K., 2000b. New JIT, a new principle for management technology 21C. Proceedings of the World Conference on Production and Operations Management, Sevilla, Spain, August 31, 2000, pp. 15–27.