KOIZUMI, Ryo. Analysis of changes in the estimated population of Tokyo during the COVID-19 pandemic. Geographical reports of Tokyo Metropolitan University. 2024. 59. 25-32
松本, 安生, 川嶋, 伸佳, 小泉, 諒. COVID-19 緊急事態宣言下における自粛行動が及ぼす心理的影響と地域特性に関する考察. 人文学研究所報 = Bulletin of the Institute for Humanities Resarch. 2022. 67. 83-102
Koizumi Ryo, Hatakeyama Teruo, Miyazawa Hitoshi. Formation of Comprehensive Community Welfare Bases in Urban Areas. 2021
小泉 諒. 都市化時期を考慮した川崎市の居住地域構造の検討. 専修大学社会科学研究所月報 = The Monthly Bulletin of the Institute for Social Science Senshu University. 2020
小泉 諒. 下町と山の手. 東京地理入門. 2020
Ryo Koizumi, Yoshiki Wakabayashi. Mapping the hot and cold spots of spatial change in Tokyo following the bubble economy period. Abstracts of the ICA. 2019
Yoshiki Wakabayashi, Ryo Koizumi. Spatial Patterns of Population Change in Central Tokyo Since the Period of the Bubble Economy. International Perspectives in Geography. 2018. 155-176