SOME APPLICATIONS OF WEYL CALCULUS TO BURCHNALL-CHAUNDY THEORY, III. Far East Journal of Mathematical Sciences (FJMS), [S. l.], v. 142, n. 1, p. 9–24, 2024. DOI: 10.17654/0972087125002. Disponível em: https://pphmjopenaccess.com/fejms/article/view/2280. Acesso em: 5 jan. 2026.