1. Barla, G., 2009. Innovative tunnelling construction method to cope with squeezing at Saint Martin La Porte access adit (Lyon–Turin Base Tunnel). In: Vrkljan (Ed.), Rock Engineering in Difficult Ground Conditions – Soft Rocks and Karst, CRC Press/Balkema – Eurock 2009, Dubrovnik, Croatia, 29–31 October 2009, 15–24, ISBN: 9780415804813.
2. Barla, G., Barla, M., Cocito, F., Ferrari, S., 2000. Contratto di Consulenza Tecnica tra l’Alpetunnel-Geie e il Politecnico di Torino – Relazione Tecnica.
3. Barla, G., Barla, M., Bonini, M., Debernardi, D., 2007a. Lessons learned during the excavation of the Saint Martin La Porte access gallery along the Lyon–Turin Base tunnel. In: Schneider et al. (Eds.), BBT 2007 – Internationales Symposium Brenner Basistunnel und Zulaufstrecken, 1:45–52. Innsbruck University Press. ISBN-10:3–902571-05-5.
4. Barla, G., Bonini, M., Debernardi, D., 2007b. Modelling of tunnels in squeezing rock. In: Eberhardsteiner et al. (Eds.), CD-ROM Proceedings of the ECCOMAS Thematic Conference on Computational Methods in Tunnelling (EURO:TUN 2007), August 27–29, 2007, Vienna, Austria. Vienna University of Technology, Austria, ISBN: 978-3-9501554-7-1.
5. Barla, G., Bonini, M., Debernardi, D., 2008. Time dependent deformations in squeezing tunnels. The 12th International Conference of International Association for Computer Methods and Advances in Geomechanics (IACMAG), 1–6 October, 2008, Goa, India. 4265-4275. .