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Pitra, Christian, Fickel, Joerns, Meijaard, Erik, and Groves, Colin (2004) Evolution and phylogeny of old world deer. Molecular Phylogenetics and Evolution, 33 (3). pp. 880-895.

Meijaard, Erik (2004) Craniometric differences among malayan sun bears (Ursus malayanus); evolutionary and taxonomic implications. Raffles Bulletin of Zoology, 52 (2). pp. 665-672.