1. Adams, J.M. & Woodward, I. 1989. Patterns in tree species richness as a test of the glacial extinction hypothesis. Nature 339: 699–701.
2. Brown, W.A. 1919. Vegetation of Philippine mountains. Bureau of Science, Manila, 434 pp.
3. Currie, D.J. 1991. Energy and large-scale patterns of animal – and plant-species richness. The American Naturalist 137: 27–49.
4. Dansereau, P. 1957. Biogeography. An Ecological Perspective. The Ronald Press, New York, 394 pp.
5. Fang, J.-Y. & Yoda, K. 1989. Climate and vegetation in China II. Distribution of main vegetation types and thermal climate. Ecological Research 4: 71–83.