GL0148-Tunnels and Shafts in Rock
1997, U.S.Army engineer manual, 236 Pages

GL0362-Urban tunnelling in soft ground using TBM's - Key note lecture
2004, Kovari, Kalman, Ramoni, Marco, International Congress on Mechanized Tunnelling: Challenging Case Histories Politecnico di Torino, Italy ? 16-19 November 2004, 1.93 MB pdf

GL0369-An Analytical Solution for Axisymmetric Tunnel Problems in Elasto-Viscoplastic Media - Appendix: Consideration of a Lining
1984, Fritz, Pit, Int. J. Num. Analytical Meth. Geomech., v. 8, 18 Pages, 1.8 MB pdf

GL0371-Basic considerations on tunnelling in squeezing ground
1996, Kovari, Kalman, Staus, J., Proceedings of the International Symposium on Geotechnical Aspects of Underground Construction in Soft Ground, Z?rich., 536 KB pdf

GL0372-Comparison of calculated and measured on cut-and-cover tunnels
1988, Tisa, Andreas, Kovari, Kalman, Proc. 5th Int. Symp. on Tunnelling, London, 726 KB pdf