Minjung Shin, Jinho Hur, Youngsam Moon, Jinho Kim, and Heekyu Kim. “IMPROVEMENT OF THE TRANSFER PATH USING A MOVING FLOW SEPARATION SYSTEM AND A TRANSPORTATION VULNERABLE ESCALATOR SYSTEM”. GEOMATE Journal, vol. 13, no. 37, Nov. 2016, pp. 87-92, https://geomatejournal.com/geomate/article/view/1540.