Ehrbar, H.; PROJECT MANAGEMENT – IMPORTANT INSTRUMENT FOR THE SUCCESSED PROJECT CONTROL; Tunnelling the Gotthard, Section for Sub-construction, 2016
Ehrbar, H.: Project risk management for large infrastructure projects – A key to project success; 7th Kassel Project Management Symposium, 2015
Ehrbar H.; THE LAW OF LARGE NUMBERS IN UNDERGROUND CONSTRUCTION – RISK MANAGEMENT FOR MEGAPROJECTS – LESSONS LEARNED FROM THE GOTTHARD BASE TUNNEL; UNDERGROUND CONSTRUCTIONS , PRAGUE 2013
Lieb, R., Ehrbar, H.; Gotthard Base Tunnel – Risk Management for the World’s Longest Railway Tunnel: Lessons Learnt, World Tunnel Congress, Helsinki 2011
Ehrbar, H., Kellenberger, J.; Risk management during donstruction of the Gotthard Base Tunnel; GTMM, Karlsruhe 2003