Wynen, L.P.; Goldsworthy, SD; Insley, SJ; Adams, M; Bickham, JW; Francis, J; Gallo, JP; Hoelzel, AR et al. (2001). "Phylogenetic relationships within the eared seals (Otariidae: Carnivora): implications for the historical biogeography of the family". Mol. Phylog. Evol.21 (2): 270–284. doi:10.1006/mpev.2001.1012. பப்மெட்:11697921.
Zenteno, Lisette; Borella, Florencia; Otero, Julieta Gómez; Piana, Ernesto; Belardi, Juan Bautista; Borrero, Luis Alberto; Saporiti, Fabiana; Cardona, Luis et al. (1 June 2015). "Shifting niches of marine predators due to human exploitation: the diet of the South American sea lion (Otaria flavescens) since the late Holocene as a case study". Paleobiology41 (3): 387–401. doi:10.1017/pab.2015.9. பன்னாட்டுத் தர தொடர் எண்:1938-5331.
nih.gov
ncbi.nlm.nih.gov
Wynen, L.P.; Goldsworthy, SD; Insley, SJ; Adams, M; Bickham, JW; Francis, J; Gallo, JP; Hoelzel, AR et al. (2001). "Phylogenetic relationships within the eared seals (Otariidae: Carnivora): implications for the historical biogeography of the family". Mol. Phylog. Evol.21 (2): 270–284. doi:10.1006/mpev.2001.1012. பப்மெட்:11697921.
Zenteno, Lisette; Borella, Florencia; Otero, Julieta Gómez; Piana, Ernesto; Belardi, Juan Bautista; Borrero, Luis Alberto; Saporiti, Fabiana; Cardona, Luis et al. (1 June 2015). "Shifting niches of marine predators due to human exploitation: the diet of the South American sea lion (Otaria flavescens) since the late Holocene as a case study". Paleobiology41 (3): 387–401. doi:10.1017/pab.2015.9. பன்னாட்டுத் தர தொடர் எண்:1938-5331.