VASCO COSTA DELGADO, C.; DA CUNHA SANTOS FORMAN, G. A.; ANTOINETTE BREUER, R. L. Organic Waste Bio-Based Materials for 3D Extrusion: Eggshells, Shells Sand and Coffee grains with Sodium Alginate. Convergences - Journal of Research and Arts Education, [S. l.], v. 15, n. 29, p. 77–87, 2022. DOI: 10.53681/c1514225187514391s.29.133. Disponível em: https://convergencias.ipcb.pt/index.php/convergences/article/view/133. Acesso em: 27 dec. 2025.