Jang, S., Choi, J., Song, B., Choi, Y. and Yoon, J. (2012). “Advanced C.I.P method
                           to use the steel-casing with inner joint.” Journal of Korean Geo-environmental Society,
                           Vol. 12, No. 2, pp. 95-102.Jang, S., Choi, J., Song, B., Choi, Y. and Yoon, J. (2012).
                           “Advanced C.I.P method to use the steel-casing with inner joint.” Journal of Korean
                           Geo-environmental Society, Vol. 12, No. 2, pp. 95-102.
