1.
On the Basis Property in Lp( 0,1) of the Root Functions of Non-self Adjoint Sturm-Lioville Operators.
Eur. J. Pure Appl. Math.
2010;3(5):831-838. Accessed February 8, 2025.
https://www.ejpam.com/index.php/ejpam/article/view/837