1. Brazilian Association of Technical Standards. NBR 10004/2004. Classification of Solid Residues;ABNT,2004
2. Brazilian Association of Technical Standards. NBR 10006/2004. Procedures to Obtain Solution Extract From Solid Residues;ABNT,2004
3. Brazilian Association of Technical Standards. NBR 15270-1/2005. Ceramic Blocks for Sealing Masonry – Terminology and Requirements;ABNT,2005
4. Utilization of paper waste sludge in the building construction industry;Ahmadi;Resour. Conserv. Recycl.,2001
5. Production and characterization of sintered ceramics from paper mill sludge and cullet;Asquini;Chemosphere,2008