POPOVA , L. V. Trivial differential equations in spaces $L_p, 0 < p< 1$. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 44, n. 9, p. 1238–1242, 1992. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/8176. Acesso em: 5 dec. 2025.