1. 1) Wagner, H.: Design and Support of Underground Excavations in Highly Stressed Rock, Keynote Paper, Proc. of 6th ISRM Congress, Montreal, Vol. 3, 1987.
2. 2) Cravero, R. I., R. E. S. Pistone and J. C. Rio.: Rio Grande I Tailrace Tunnel Monitoring, Proc. of 2nd Int. Sympo. on Field Measurements in Geomechanics, Kobe, Vol. 2, p. 657-667, 1987.
3. 3) Chryssanthakis, P. and N. Barton.: Predicting Performance of the 62m Span Ice Hockey Cavern in Gjovik, Norway, Preprints of ISRM Conference Fractured and Jointed Rock Masses, Lake Tahoe, LBL-32379, Vol. 3, pp. 624-631, 1992.
4. 4) Kosugi, M., H. Ishihara. and M. Nakagawa.: Tunnelling Method Coupled with Joint Monitoring and DEM Analysis, Preprints of ISRM Conf. Fractured and Jointed Rock Masses, Lake Tahoe, LBL-32379, Vol. 3, pp. 765-770, 1992.
5. 5) 小杉昌幸, 玉井昭雄: 不連続面の変位計測方法及び不連続面変位計, 特許願, 平5-308277, 1993.