TEAM, S. Dissipative Extensions of Fourth Order Differential Operators: Huseyin Tuna, Bilender Pasaoglu Allahverdiev. Thai Journal of Mathematics, [S. l.], v. 16, n. 1, p. 275–285, 2018. Disponível em: https://thaijmath2.in.cmu.ac.th/index.php/thaijmath/article/view/793. Acesso em: 19 may. 2024.