Sobhy El-Sayed IBRAHIM. Studies on the Product of Integro Quasi-Differential Equations and Their Solutions in Direct Sum Spaces. Current Topics on Mathematics and Computer Science Vol. 1, [S. l.], p. 97–116, 2021. DOI: 10.9734/bpi/ctmcs/v1/9606D. Disponível em: https://stm.bookpi.org/CTMCS-V1/article/view/1392. Acesso em: 3 jun. 2026.