Jankiewicz, Mateusz. “The Convergence of Food Expenditures in the European Union Countries – a Spatio‑Temporal Approach”. Acta Universitatis Lodziensis. Folia Oeconomica 1, no. 340 (April 4, 2019): 91–106. Accessed April 8, 2025. https://czasopisma.uni.lodz.pl/foe/article/view/3327.