@article{article314f07ea,
title   = {Determination of Cu and Ni incorporation ratios in Portland cement clinker},
author = {Ract, Paulo Geraldo and Espinosa, Denise Crocce Romano and Tenório, Jorge Alberto Soares},
year = {2003},
doi = {10.1016/s0956-053x(02)00061-2},
journal   = {Waste Management}
}