1. Adams, M. S. and Loucks, O. L.: 1971, ?Summer Air Temparatures as a Factor Affecting Net Photosynthesis and Distribution of Eastern Hemlock (Tsuga canadensis (L.) Carriere) in Southwestern Wisconsin?, Amer. Mid. Nat. 85, 1?10.
2. Blasing, T. J., Duvick, D. N., and West, D. C.: 1981, ?Dendroclimatic Calibration and Verification Using Regionally Averaged and Single Station Precipitation Data?, Tree-Ring Bull. 41, 37?44.
3. Boden, T. A.: 1987, United States Historical Climatology Network (HCN) Serial Temperature and Precipitation Data, Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, Oak Ridge, Tennessee.
4. Botkin, D. B., Janak, J. F., and Wallis, J. R.: 1972, ?Some Ecological Consequences of a Computer Model of Forest Growth?, J. Ecology 60, 849?872.
5. Box, G. E. P. and Jenkins, G. W.: 1970, Time Series Analysis: Forecasting and Control, Holden-Day, New York.