Porto Metro
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Centis, S. / Giacomin, G. (2004): EPB tunnelling in highly variable ground – the experience of Oporto Light Metro. In: Tunnelling and Underground Space Technology, v. 19, n. 4-5 (July 2004), pp. 358.
https://doi.org/10.1016/j.tust.2004.01.058
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Reis, António / Lopes, Nuno / Ribeiro, Daniel (2007): The New Metro of Oporto: A variety of bridge projects. Presented at: IABSE Symposium: Improving Infrastructure Worldwide, Weimar, Germany, 19-21 September 2007, pp. 278-279.
https://doi.org/10.2749/222137807796157913
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Sousa, Rita L. / Einstein, Herbert H. (2012): Risk analysis during tunnel construction using Bayesian Networks: Porto Metro case study. In: Tunnelling and Underground Space Technology, v. 27, n. 1 (January 2012), pp. 86-100.
https://doi.org/10.1016/j.tust.2011.07.003