Pennycuick, C.J. Energy costs of locomotion and the concept of "Foraging radius". ed. A.R.E. Sinclair and M. Norton-Griffiths (编). Serengetti: Dynamics of an Ecosystem. Chicago: Univ. Chicago Press. 1979: 164–85. ISBN 0-226-76029-4.
Anthony D. Barnosky, Paul L. Koch, Robert S. Feranec, Scott L. Wing, Alan B. Shabel. Assessing the Causes of Late Pleistocene Extinctions on the Continents. Science. 2004, 306 (5693): 70–75. PMID 15459379. doi:10.1126/science.1101476.
Vartanyan, S.L., Garutt, V. E. and Sher, A.V. Holocene dwarf mammoths from Wangel Island in the Siberian Arctic. Nature. 1993, 362: 337–40. doi:10.1038/362337a0.
Anthony D. Barnosky, Paul L. Koch, Robert S. Feranec, Scott L. Wing, Alan B. Shabel. Assessing the Causes of Late Pleistocene Extinctions on the Continents. Science. 2004, 306 (5693): 70–75. PMID 15459379. doi:10.1126/science.1101476.
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Svenson, Sally. Bison. South Dakota Department of Game, Fish and Parks. 1995. (原始内容存档于2008-09-13).