Diurnal changes in the radius of a subalpine Norway spruce stem: their relation to the sap flow and their use to estimate transpiration

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Herzog, K. M., Häsler, R., & Thum, R. (1995). Diurnal changes in the radius of a subalpine Norway spruce stem: their relation to the sap flow and their use to estimate transpiration. Trees: Structure and Function, 10(2), 94-101. https://doi.org/10.1007/BF00192189