“On the Basis Property in Lp( 0,1) of the Root Functions of Non-self Adjoint Sturm-Lioville Operators” (2010) European Journal of Pure and Applied Mathematics, 3(5), pp. 831–838. Available at: https://www.ejpam.com/index.php/ejpam/article/view/837 (Accessed: 4 December 2024).