On existence of solutions of the Cauchy problem for a certain class of linear partial differential-functional equations. Neliniini Kolyvannya, [S. l.], v. 3, n. 3, p. 390–392, 2000. Disponível em: https://twinhead.imath.kiev.ua/index.php/nosc/article/view/130. Acesso em: 22 jan. 2026.