Kunz, J. H.; Bergonci, J. I.; Bergamaschi, H.; Dalmago, G. A.; Heckler, B. M. M.; Comiran, F. Interception and Use of Solar Radiation by Maize, As Modifying Soil Tillage, Row Spacing and Irrigation Water Availability. PAB 2007, 42, 1511-1520.