A PRELIMINARY REVIEW OF MULTISCALE FRET AS INNOVATION OF ERGONOMIC GUITAR. Journal of Technology and Operations Management, [S. l.], v. 16, n. 1, p. 81–90, 2021. DOI: 10.32890/jtom2021.16.1.7. Disponível em: https://www.educationmalaysia.co.uk/index.php/jtom/article/view/13811. Acesso em: 10 nov. 2025.