SLYUSARCHUK, V. Yu. Denseness of the set of Cauchy problems with nonunique solutions in the set of all Cauchy problems. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 64, n. 7, p. 1001–1006, 2012. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2635. Acesso em: 5 dec. 2025.