VEREZHAK, A. P.; HORODETS’KYI, V. V.; PETRYSHYN, R. I. A problem for one class of pseudodifferential evolutionary equations multipoint in the time variable. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 70, n. 3, p. 337–355, 2018. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/1560. Acesso em: 5 dec. 2025.