Zeki Bostan, S. “Important Chemical and Physical Traits and Variation in These Traits in ’tombul’ Hazelnut Cultivar at Different Elevations”. Grasas y Aceites 54, no. 3 (September 30, 2003): 234–239. Accessed May 5, 2024. https://grasasyaceites.revistas.csic.es/index.php/grasasyaceites/article/view/236.