@article{articlee8f9724a,
title   = {Geochemistry and geochemical modeling of unsaturated zone in a tropical region in Urânia, São Paulo state, Brazil},
author = {Bertolo, Reginaldo Antonio and Hirata, Ricardo and Sracek, Ondra},
year = {2006},
doi = {10.1016/j.jhydrol.2006.02.001},
journal   = {Journal of Hydrology}
}