Karyotis, Theodore, George Arampatzis, Andreas Panagopoulos, Evangelos Hatzigiannakis, Evangelos Tziritis, Katerina Karyoti, and John Vrouchakis. “Nutrients, Trace Elements and Water Deficit in Greek Soils Cultivated With Olive Trees”. EQA - International Journal of Environmental Quality 13, no. 13 (January 1, 2014): 9–20. Accessed January 31, 2023. https://eqa.unibo.it/article/view/4536.