SIDDIQ, Sadjad. A Physical Model of the Nonlinear Sitar String. Archives of Acoustics, [S. l.], v. 37, n. 1, p. 73–79, 2013. Disponível em: https://acoustics.ippt.gov.pl/index.php/aa/article/view/129. Acesso em: 17 jan. 2026.