Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) "日下, 泰夫 and 平坂, 雅男 and Kusaka, Yasuo and Hirasaka, Masao",Product Development Process for creating Added Value Using the Process-oriented Hybrid Approach,獨協経済,0918-9491,獨協大学経済学部,2013-02,,92,27-40,https://cir.nii.ac.jp/crid/1050564288804513408,