Knoll, Mathilde, and Helmut Redl. 2012. “Gas Exchange of Field-Grown <em>Vitis vinifera</em> L. Cv. Zweigelt Leaves in Relation to Leaf Age and Position Along the Stem”. OENO One 46 (4):281-94. https://doi.org/10.20870/oeno-one.2012.46.4.1524.