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2. Kedar, A., et al.: Guidelines for preparation of a case study, WG4 Tech. Rep. COST Action TU1406 (2018)
3. IP: Quintão hydraulic passage inventory, IP- Infraestruturas de Portugal, unpublished report (2006). in Portuguese
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5. IP: Quintão hydraulic passage regular inspection, IP- Infraestruturas de Portugal, unpublished report (2014). in Portuguese