TEAM, S. A Generalization of the Fourier Transform of Ultrahyperbolic Operator: Manuel A. Aguirre. Thai Journal of Mathematics, [S. l.], v. 11, n. 3, p. 499–518, 2013. Disponível em: https://thaijmath2.in.cmu.ac.th/index.php/thaijmath/article/view/394. Acesso em: 2 may. 2024.