Reference

Allen, Richard G, Luis S Pereira, Dirk Raes, Martin Smith, et al. 1998. „Crop evapotranspiration-Guidelines for computing crop water requirements-FAO Irrigation and drainage paper 56". Fao, Rome 300 (9): D05109.

Campbell, Gaylon S, a John M Norman. 2000. An introduction to environmental biophysics. Springer Science & Business Media.