VERHOEVEN, Luuk. Hearing the Shape of a Trapezoid Drum. Student Undergraduate Research E-journal!, [S. l.], v. 2, 2016. DOI: 10.25609/sure.v2.1466. Disponível em: https://journals.open.tudelft.nl/sure/article/view/1466. Acesso em: 16 jun. 2025.