1. Observational construction of large-scaled twin road tunnels with minimum interval;Kawata,1993
2. Analysis of the effects of the new twin-tunnels excavation very close to a big diameter tunnel of Caracas Subway;Perri,1994
3. Influence forecast and field measurement of a tunnel excavation crossing right above existing tunnels;Saitoh,1994
4. Shahrour, I., Mroueh, H., 1997. Three-dimensional non linear analysis of a closely twin tunnels. In: Sixth International Symposium on Numerical Models in Geomechanics (NUMOG VI), vol. 2. Montreal, Quebec, Canada, pp. 481–487.
5. Two and three-dimensional analysis of closely spaced double-tube tunnels;Soliman;Tunelling Underground Space Technol.,1993