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♦ 1AN ASSESSMENT OF FOOD OVERLAP BETWEEN GIBBONS AND HORNBILLS, Chuti-on Kanwatanakid-Savini and Pilai Poonswad, Tommaso Savini, THE RAFFLES BULLETIN OF ZOOLOGY 2009 57(1): 189198
♦ 2"Fig-eating by vertebrate frugivores: a global review", MIKE SHANAHAN, SAMSON SO, STEPHEN G. COMPTON and RICHARD CORLETT, Biol. Rev. (2001), 76, pp. 529572