Bounded solutions of a differential equation with piecewise constant operator coefficients. Neliniini Kolyvannya, [S. l.], v. 24, n. 2, p. 147–157, 2021. Disponível em: https://twinhead.imath.kiev.ua/index.php/nosc/article/view/1021. Acesso em: 6 dec. 2025.