@article{silva_2001,  title={Monte Carlo simulation of nuclear logging detection systems},  volume={19},  ISSN={0102-261X},  url={https://doi.org/10.1590/S0102-261X2001000300001},  DOI={10.1590/S0102-261X2001000300001},  number={3},  journal={Revista Brasileira de Geofísica},  publisher={Sociedade Brasileira de Geofísica},  author={Silva, Jadir C. da},  year={2001},  month={Sep},  pages={239–250} }