1. Some remarks on Penman's equation for evapotranspiration;Businger;Neth. J. Agric. Sci.,1956
2. On the study of evapotranspiration and water balance;Chang;Erdkunde,1965
3. Some further thoughts on evapotranspiration: a new estimate;Crowe;Geogr. Studies,1957
4. Calculation of evapotranspiration from potatoes;Enrodi;Neth. J. Agric. Sci.,1969