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K. A. I. Nekaris, J. Jayewardene «Survey of the slender loris (Primates, Lorisidae Gray, 1821: Loris tardigradus Linnaeus, 1758 and Loris lydekkerianus Cabrera, 1908) in Sri Lanka». Journal of Zoology, 262, 4, 2004, pàg. 327–338. DOI: 10.1017/S0952836903004710.(anglès)