Moret, Y., Sousa, R., and Einstein, H.H. (2009). The Decision Aids for Tunneling – Introduction and recent applications in Portugal. In R. Delgado, A. Campos e Matos, R. Calçada, L. Ribeiro e Sousa & A. Topa Gomes (Eds): Proceedings of the Tunnels for High-Speed Railways Workshop, 1-2 October 2009, Porto, Portugal. Porto: FEUP. ISBN 978-9727521128