ON THE RESONANT FREQUENCIES OF THE OJA. Nigerian Journal of Technology, [S. l.], v. 18, n. 1, p. 1–21, 2003. DOI: 10.4314/njt.181.434. Disponível em: https://www.nijotech.com/index.php/nijotech/article/view/434. Acesso em: 18 oct. 2025.