Performance Enhancement of a Piezoelectric Harvester Included into an Autonomous System. Journal of Engineering, [S. l.], v. 21, n. 09, p. 67–84, 2015. DOI: 10.31026/j.eng.2015.09.05. Disponível em: https://joe.uobaghdad.edu.iq/index.php/main/article/view/350. Acesso em: 28 mar. 2025.