AHMED, Shafaq. NITROUS OXIDE-TIME TO SAY GOODBYE!. Journal of Ayub Medical College Abbottabad, [S. l.], v. 20, n. 4, p. 1–2, 2008. Disponível em: https://jamc.ayubmed.edu.pk/index.php/jamc/article/view/3828. Acesso em: 14 mar. 2025.