@article{article5de4f96e,
title   = {Radioactivity and gamma-dose rates observed at the Morungaba Granites, southeastern Brazil},
author = {Lucas, Fábio de Oliveira and Ribeiro, Fernando Brenha},
year = {2013},
doi = {10.1093/rpd/ncs322},
journal   = {Radiation Protection Disimetry}
}