Minoru Yamanaka, Naoya Toyota, Shuichi Hasegawa, and Atsuko Nonomura. “Estimation Method of Amount of Tsunami Disaster Wastes During the 2011 off the Pacific Coast of Tohoku Earthquake”. GEOMATE Journal, vol. 4, no. 7, Mar. 2013, pp. 456-61, https://geomatejournal.com/geomate/article/view/1859.