TY - JOUR T1 - Some aspects of citrus ecophysiology in subtropical climates: re-visiting photosynthesis under natural conditions JO - Brazilian Journal of Plant Physiology A1 - Ribeiro, Rafael V. A1 - Machado, Eduardo C. SN - 1677-0420 UL - 10.1590/S1677-04202007000400009 VL - 19 Y1 - 2007 PB - Brazil ER -