Filip, M., Vlassa, M., Coman, V., Halmagyi, A. (2016)
Simultaneous determination of glucose, fructose, sucrose and sorbitol in the leaf and fruit peel of different apple cultivars by the HPLC–RI optimized method. Food Chemistry, 199, 653-659
https://www.sciencedirect.com/science/article/abs/pii/S0308814615303381