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Oliveira, J.; Paiva Silva, C.; Pimental, N. (2010). "Atlas of Mesozoic units, from the Espichel to the Carvoeiro Capes (Western Portugal)". E-Terra: Revista Electronica de Ciências da Terra / e Terra: Geosciences On-Line Journal. 21 (3): 2. ISSN1645-0388.