@article{article150b3423,
title   = {Tiering strategic environmental assessment and project environmental impact assessment in highway planning in São Paulo, Brazil},
author = {Sánchez, Luis Enrique and Silva-Sánchez, Solange Santos},
year = {2008},
doi = {10.1016/j.eiar.2008.02.001},
journal   = {Environmental Impact Assessment Review}
}