4R.J. Mair and R.N. Taylor. Theme lecture: Bored tunnelling in the urban environment. Proceedings of the Fourteenth International Conference on Soil Mechanics and Foundation Engineering, Rotterdam, 1997:2353 - 2385.
5Anagnostou G, Kov'ari K. Face stability conditions earth-pressure-balanced shields[J]. Tunneling and Underground Space Technology, 1996, 11(2):165 - 173.
6Fast Lagrangai n Analysis of Continua in 3 Dimensions-User's Guide. Itasca Consulting Group, Inc. Unites States of America,2002.
