@incollection{Cavalheiro18,
author = {Gabriel Cavalheiro and Mariana Brandao and Saulo Rocha},
title = {Proposing a Patent Information Approach for Identifying Technological Trends in the Brazilian Upstream Oil and Gas Industry},
booktitle = {Drilling},
publisher = {IntechOpen},
address = {Rijeka},
year = {2018},
editor = {Ariffin Samsuri},
chapter = {1},
doi = {10.5772/intechopen.75377},
url = {https://doi.org/10.5772/intechopen.75377}
}