IVANOVA, Sonia; GROZEVA, V.; MILANOV, I. Some aspects of the updated International Classification of Headache Disorders 2018. Cephalgia, [S. l.], v. 21, n. 1, p. 23–29, 2019. Disponível em: https://cephalgia.org/index.php/ce/article/view/8. Acesso em: 26 oct. 2026.