On the Basis Property in Lp( 0,1) of the Root Functions of Non-self Adjoint Sturm-Lioville Operators. European Journal of Pure and Applied Mathematics, Maryland, USA, v. 3, n. 5, p. 831–838, 2010. Disponível em: https://ejpam.com/index.php/ejpam/article/view/837.. Acesso em: 3 may. 2024.