Heineke, D., Sonnewald, U., Buessis, D., Guenter, G., Leidreiter, K., Wilke, I., et al. (1992). Apoplastic Expression of Yeast-Derived Invertase in Potato - Effects on Photosynthesis, Leaf Solute Composition, Water Relations, and Tuber Composition. Plant Physiology, 100(1), 301-308. doi:10.1104/pp.100.1.301.