About this article
Published Online: Jul 28, 2018
Page range: 49 - 67
Received: Mar 27, 2018
DOI: https://doi.org/10.2478/forma-2018-0005
Keywords
© 2018 Noboru Endou, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.
Endou, Noboru
National Institute of Technology, Gifu CollegeGifu, Japan