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♦ 1Consumers of sea urchins, Paracentrotus lividus and Arbacia lixula, in shallow Mediterranean rocky reefs, Paolo Guidetti, Helgol Mar Res (2004) 58:110–116
♦ 2Feeding ecology of the white seabream, Diplodus sargus, and the ballan wrasse, Labrus bergylta, in the Azores, Miguel Figueiredo, Telmo Morato, João P. Barreiros, Pedro Afonso, Ricardo S. Santos, Fisheries Research 75 (2005) 107–119
♦ 3Jorrit H. Poelen, James D. Simons and Chris J. Mungall. (2014).
Global Biotic Interactions: An open infrastructure to share and analyze species-interaction datasets. Ecological Informatics.