@article{articlea6bdbf21,
title   = {Effective dose rate evaluation from natural gamma radiation in the region of Ribeirão Preto, SP-Brazil},
author = {Cavalcante, F. and Silva, N. C. and Alberti, H. L. C. and Almeida, Adelaide de},
year = {2012},
doi = {10.1051/radiopro/20116921s},
journal   = {Radioprotection}
}