Amine Tlemsani, Mahmoud Brahim, Sidali Ramdane, Karima Aoues. “Understanding the Impact of Agricultural Extension Services in Algeria: A Comparative Study of Ouargla, Béjaia, and Relizane”. European Economic Letters (EEL), vol. 14, no. 4, Dec. 2024, pp. 1446-52, https://www.eelet.org.uk/index.php/journal/article/view/2276.