WAGNER, Herbert. Armut, Randgruppen und räumlich soziale Segregation: Welfare Geography im Geographieunterricht. Journal of Geography Education, [S. l.], v. 17, n. 1, p. 15–35, 1989. DOI: 10.60511/zgd.v17i1.401. Disponível em: https://zgd-journal.de/index.php/zgd/article/view/401. Acesso em: 2 apr. 2026.