BAHRI, M. A useful inequality for quaternion linear canonical transform. Hilbert Journal of Mathematical Analysis, [S. l.], v. 1, n. 1, p. 6–13, 2022. DOI: 10.62918/hjma.v1i1.7. Disponível em: https://hilbertjma.org/hilbertjma/article/view/7. Acesso em: 13 oct. 2025.