1. Bartlett, D.S., Whiting, G.J. and Hartman, J.M.: 1990, ‘Use of vegetation indices to estimate intercepted solar radiation and net carbon dioxide exchange of a grass canopy’, Remote Sensing of Environment 30, 115–128.
2. Blaisdell, J.P.: 1958, Seasonal development and yield of native plants in the upper Snake River Plains and their relation to certain climatic factors, U.S. Department of Agriculture Technical Bulletin 1190.
3. Brussard, P.F.: 1989, ‘Butterflies of the Greater Yellowstone Ecosystem’, in: Rare Sensitive, and Threatened Species of the Greater Yellowstone Ecosystem, Clark, T. et al., Mountain West Environmental Services. Jackson, WY, pp. 28–32.
4. Curran, P.: 1985, ‘Multispectral remote sensing of vegetation amount’, Progress in Physical Geography 9, 315–341.
5. Daubenmire, R.F.: 1959, ‘A canopy coverage method of vegetation analysis’, Northwest Science 33, 43–64.