@inproceedings{inproceedingsf882998f,
title   = {Aggregate mining sites in the São Paulo City urbana area, Brazil},
author = {Born, Helmut and Soares, Lindolfo and Mendes, K. S.},
year = {1998},
publisher = {Balkema},
booktitle   = {International Symposium on Mine Planning and Equipment Selection}
}