1. Beneficial use of sludge in building components. 1. Concept review and technical background;Alleman;Interbrick,1987
2. Ceramic building materials: an alternative in disposal of sewage sludge;Almeida;Key Engineering Materials,1997
3. Castro, F.P. 1999. Ecoinert—inertization of metallurgical wastes by stabilization in ceramic products. Technical Report CRAFT Project no. BE-S2-2260.
4. Attempts of incorporation of metal plating sludges in ceramic products;Couto;Industrial Ceramics,2001
5. Application of anodising muds in several industrial fields;González,1999