Approximate Controllability of the System Governed by Double Coupled Semilinear Degenerate Parabolic Equations. Communications in Mathematical Research, [S. l.], v. 36, n. 4, p. 403–422, 2020. DOI: 10.4208/cmr.2020-0061. Disponível em: https://www.global-sci.com/index.php/cmr/article/view/9040. Acesso em: 27 feb. 2026.