山島 有喜, 山本 清龍, 小堀 貴子, 下村 彰男. 国立公園来訪者の意識をふまえた環境保全基金の規模の検討-Examination of the Size of the Environmental Conservation Fund based on the awareness of visitors to National Parks. 日本観光研究学会全国大会学術論文集 = Proceedings of JITR annual conference. 2021. 36. 173-178
小堀 貴子, 山島 有喜, 劉 銘, 山本 清龍. 富士山保全協力金等を財源とする基金を活用した事業の特徴の把握と継続性に関する考察-An Investigation of Characteristics and Longevity within the Project Allocated by the Fujisan Conservation Donations. 観光研究. 特集号 : 日本観光研究学会機関誌 = The tourism studies. Special issue : journal of Japan Institute of Tourism Research / 日本観光研究学会 編. 2023. 35. 61-68
Visitors Awareness and Behavior Regarding Donations for Mount Ibuki Conservation: A Comparative Study between Climbers and Car Users
(The 10th International Conference on Monitoring and Management of Visitors in Recreational and Protected Areas 2021)