EL-SAYED, W. G. .; ABD EL-RAHMAN, R. O.; ABD EL-SALAM, S. A.; EL SHAHAWY, A. A. . On the existence of a bounded variation solution of a fractional integral equation in L1[0, T] due to the spread of COVID 19. JOURNAL OF ADVANCES IN MATHEMATICS, [S. l.], v. 21, p. 107–115, 2022. DOI: 10.24297/jam.v21i.9254. Disponível em: https://rajpub.com/index.php/jam/article/view/9254. Acesso em: 22 dec. 2024.