IRGASHEV, B. Yu. Mixed problem for higher-order equations with fractional derivative and degeneration in both variables. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 74, n. 10, p. 1328–1338, 2022. DOI: 10.37863/umzh.v74i10.6298. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/6298. Acesso em: 7 apr. 2025.