1. Architectural Institute of Japan, Damage investigation quick report of the Great East Japan Earthquake, July, 2011.
2. National Institute for Land and Infrastructure Management, Building Research Institute. Damage investigation report of the Great East Japan Earthquake, March, 2012.
3. Architectural Institute of Japan, For the prevention of the frequent ceiling failure, in: Proceedings of the research seminar of department of social needs in 2012, September, 2012.
4. T. Mulono, The ground motion characteristics and its influence to structures during the Great East Japan Earthquake, An Outline of Monthly Seminar of Railway Technical Research Institute, 2011.
5. Japan Meteorological Agency, About the Great East Japan Earthquake (the 16th report), March, 2011.