Trinca, C. S.; Waldemarin, H. F.; Eizirik, E. (2007). “Genetic diversity of the Neotropical otter (Lontra longicaudis Olfers, 1818) in Southern and Southeastern Brazil”. Brazilian Journal of Biology67 (4): 813–8. doi:10.1590/S1519-69842007000500003. PMID18278347.
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pubmed.ncbi.nlm.nih.gov
Trinca, C. S.; Waldemarin, H. F.; Eizirik, E. (2007). “Genetic diversity of the Neotropical otter (Lontra longicaudis Olfers, 1818) in Southern and Southeastern Brazil”. Brazilian Journal of Biology67 (4): 813–8. doi:10.1590/S1519-69842007000500003. PMID18278347.