1. Japan Road Association Technical Standard and Explanation for Road Tunnel (for Structures) 2003
2. Ministry of Land, Infrastructure and Transport, Road Bureau Guideline of periodical inspection for road tunnel 2014
3. Okui , Y. Ota , H. Hayakawa , Y. Isaji , S. Fundamental Study of Tunnel Stability Based on Elasto-plastic Model for a Road Surface Heaving
4. Shimamoto , K. Yashiro , K. Kojima , Y. Takahashi , M. Matsunaga , T. Asakura , T. Study of Prediction Concerning Tunnel Deformation and Effect of Countermeasure by Simulation Analysis Using Ground Strength Reduction Model 2009
5. Isago , N. Mashimo , H. Quantitative health evaluation for existing tunnel against scaling and spalling 2013