García-Carcedo, F., Ayala, N., Hernández, A., Palacios, M. A., García, E., Goicoechea, N. and Dañobeitia, I. (1998) “Development of a cleaner technology for obtaining ZnO from wastes generated in steel manufacturing”, Revista de Metalurgia, 34(Extra), pp. 432–435. doi: 10.3989/revmetalm.1998.v34.iExtra.787.