BURCHARD, Helena. Einiges über das Problem der Altersklassen in neolithischen Gesellschaften. Folia Orientalia, [S. l.], v. 11, p. 55–59, 2026. Disponível em: https://wydawnictwo.pan.pl/index.php/fo/article/view/2313. Acesso em: 22 aug. 2026.