Eiji Toma, Yukinori Kobayashi. The Method for Optimum Estimation of COVID-19 Variant Type Virus Infection Status Analysis by the Multivariate Analysis Considering the Environmental Variability Impact in Japan. Journal of Applied Mathematics and Physics. 2022. 10. 02. 425-448
Eiji Toma. The Method for Optimum Design of Resin Injection Molding Process Conditions using Multivariate Analysis with Robust Parameter Design. Mechanical Engineering : An International Journal. 2021. 8. 4. 1-21
Eiji Toma. Analytical research on resin injection molding process applying "Quality Engineering". The 4th International Conference on Manufacturing Process Technology 2017 (ICMPT-4 2017) at Muroran Institute of Technology in Hokkaido, Japan. 2017