NAKAGAWA, Yoichiro. Job Evolution through Polyvalence, Multitasking, and Internal Promotion. Keizaigaku-Ronsan (The Journal of Economics): Chuo University. 2024. 64. 5・6. 99-119
NAKAGAWA Yoichiro. Vertical Task Sharing Sustained by Internal Promotion. Keizaigaku-Ronsan (The Journal of Economics): Chuo University. 2024. 64. 3・4. 83-100
NAKAGAWA Yoichiro. Well-defined Tasks for Individualized Jobs : Tayloristic Organizations Observed in France in the 1990s. Keizaigaku-Ronsan (The Journal of Economics): Chuo University. 2023. 64. 1・2. 57-77
NAKAGAWA Yoichiro. Is Judeo-Christian Anthropocentrism Responsible for the Degradation of Global Environment?: Nomadic Pastoralism as the Origin of Civilization and Environmental Destruction. Keizaigaku-Ronsan (The Journal of Economics): Chuo University. 2023. 63. 5・6. 157-182
NAKAGAWA, Yoichiro. The Emergence of Proto-Indo-Europeans as Nomadic Pastoralists. Keizaigaku-Ronsan (The Journal of Economics): Chuo University. 2022. 63. 3・4. 37-56