Santos, L. M., G. A. e S. Ferraz, F. B. D. S. Martins, R. R. Salvador, and P. F. P. Ferraz. 2019. “ANALYSIS OF ACOUSTIC PERTURBATION PRODUCED BY CHAINSAW AND BRUSHCUTTER IN DIFFERENT ENVIRONMENTS”. Revista Brasileira De Engenharia De Biossistemas 13 (2). Tup:100-108. https://doi.org/10.18011/bioeng2019v13n2p100-108.