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♦ ¹Food web of a SW Atlantic shallow coastal lagoon: spatial environmental variability does not impose substantial changes in the trophic structure, Laura Rodríguez-Graña, Danilo Calliari, Daniel Conde, Javier Sellanes, Roberto Urrutia, Mar Ecol Prog Ser 362: 69–83, 2008
♦ ²Smooth Skate, Malacoraja senta, Life History and Habitat Characteristics, David B. Packer, Christine A. Zetlin, and Joseph J. Vitaliano, NOAA Technical Memorandum NMFS-NE-177 (2003)