1. J.M.F. Ferreira, P.M.C. Torres, M.S. Silva, J.A. Labrincha: Proc. TMS Fall Meeting on Recycling and Waste Treatment in Mineral and Metal Processing: Technical and Economic Aspects (Lulea, Sweden, 2002) Vol. 2, p.389.
2. M.J. Ribeiro, D.U. Tulyaganov, J.M. Ferreira, J.A. Labrincha: Ceramics International, 28.
3. (2002) pp.319-26.
4. J.A. Labrincha, S.M. Marieiro, E.A. Duarte, M.B. Martins, I. Neto, R. Fragoso: Actas 9º Encontro Nacional de Saneamento Básico (APESB, Portugal, 2000) p.689.
5. D.U. Tulyaganov, S.M.H. Olhero, M.J. Ribeiro, J.M.F. Ferreira, J.A. Labrincha: J. Mat. Synt. Proc., 10.