Schulze, E. D., Lange, O. L., Evenari, M., Kappen, L., & Buschbom, U. (1975). The
role of air humidity and temperature in controlling stomatal resistance of Prunus armeniaca L. under desert conditions. III.
The effect on water use efficiency. Oecologia, 19(4),
303-314. doi:10.1007/BF00348106.