Yuanhang Song, A. Takahashi, K. Yasufuku, and H. Abe. “EVALUATION OF THE STAIRCASES’ VISIBILITY IN UMEDA UNDERGROUND STREET BY USING SPACE SYNTAX”. 2022. GEOMATE Journal, vol. 22, no. 90, Apr. 2022, pp. 49-56, https://geomatejournal.com/geomate/article/view/3239.