Autonomous periodic boundary-value problems with switchings at nonfixed points of time. Neliniini Kolyvannya, [S. l.], v. 27, n. 4, p. 469–493, 2024. DOI: 10.3842/nosc.v27i4.1480. Disponível em: https://twinhead.imath.kiev.ua/index.php/nosc/article/view/1161. Acesso em: 6 dec. 2025.