1. 1SN Azam-Ali, NMJ Crout, and RG Bradley , 1993 . Perspectives in modelling resource capture by crops . In: Monteith JL, Scott RK, Unsworth MH, eds. Resource Capture by Crops. Nottingham, UK: Nottingham University Press, 125, 48 .
2. 2NR Baker, and P Horton , 1988 . Chlorophyll fluorescence quenching during photoinhibition . In: Kyle DJ, Osmond CB, Arntzen CJ, eds. Photoinhibition. Amsterdam, Netherlands: Elsevier, 145, 68 .
3. Susceptibility of Tobacco Leaves to Photoinhibition following Infection with Two Strains of Tobacco Mosaic Virus under Different Light and Nitrogen Nutrition Regimes
4. 4JP Bell , 1987 .Neutron Probe Practice. Wallingford, UK: Institute of Hydrology: Report, 19, 3rd edn.
5. Chlorophyll Fluorescence as a Probe of the Photosynthetic Competence of Leaves in the Field: A Review of Current Instrumentation