Tomohiro Yamazaki, Katsumi Hattori, Heitaro Kaneda, Hideo Sakai, Yoshinori Izumi, Tomomi Terajima. Development of Monitoring System to Understand Preparation Processes of Rainfall-Induced Landslides Estimation of Slip Surface and In Situ Observation Using Electromagnetic Methods. ELECTRONICS AND COMMUNICATIONS IN JAPAN. 2017. 100. 10. 3-11