Cauchy problem for fractional high order equation with singular coefficient. Uzbek Mathematical Journal, [S. l.], v. 70, n. 1, p. 60–71, 2026. DOI: 10.29229/uzmj.2026-1-6. Disponível em: https://uzmj.mathinst.uz/index.php/uzmj/article/view/280.. Acesso em: 26 mar. 2026.