LÜLL, M. Die Buchsicherungsanlage von 3M. WLBforum, Stuttgart, v. 4, n. 1, p. 24, 2002. DOI: 10.53458/wlbf.v4i1.480. Disponível em: https://journals.wlb-stuttgart.de/ojs/index.php/wlbf/article/view/480. Acesso em: 27 apr. 2024.