SENALP, T. “Semi-fretless Guitar Invention and Method Writing”. International Journal of Social Science and Economics Invention, [S. l.], v. 2, n. 02, p. 289 to 294, 2016. DOI: 10.23958/ijssei/vol02-i02/02. Disponível em: http://ijssei.in/index.php/ijssei/article/view/40. Acesso em: 15 may. 2024.