Abdelhamid, Mahmoud A., Yuri Sudnik, Haider J. Alshinayyin, and Fatma Shaaban. “Non-Destructive Method for Monitoring Tomato Ripening Based on Chlorophyll Fluorescence Induction”. Journal of Agricultural Engineering 52, no. 1 (November 10, 2020). Accessed June 19, 2021. https://agroengineering.org/index.php/jae/article/view/1098.