OJRZYŃSKA, Anna; TWARÓG, Sebastian. Dynamics of Change in Spatial Dependencies in Blood Donation System in Poland. Comparative Economic Research. Central and Eastern Europe, [S. l.], v. 15, n. 4, p. 177–189, 2013. DOI: 10.2478/v10103-012-0034-6. Disponível em: https://www.czasopisma.uni.lodz.pl/CER/article/view/6829. Acesso em: 10 dec. 2025.