Monge, Manuel. “A Time Trend and Persistence Analysis of Sunflower Oil and Olive Oil Prices in the Context of the Russia-Ukraine War”. Research on World Agricultural Economy 5, no. 3 (September 20, 2024): 24–36. Accessed November 23, 2024. https://journals.nasspublishing.com/index.php/rwae/article/view/1096.