Silveira, F. da, Machado, F., Romano, L., Amaral, F., & Ruppenthal, J. (2018). Strategy for the development of agricultural machinery: importance of patent analysis. Brazilian Journal of Operations & Production Management, 15(4), 535-544. https://doi.org/https://doi.org/10.14488/BJOPM.2018.v15.n4.a7