S. V. dos S. . Barros, N. . Higuchi, C. C. do . Nascimento, R. D. de . Araújo, and F. de S. P. . Filho, “Wave Propagation Technology in Non-destructive assays for Wood Qualifying in Tropical Amazon”, Int J Innov Educ Res, vol. 7, no. 8, pp. 259–274, Aug. 2019, doi: 10.31686/ijier.vol7.iss8.1673.