“Boundedness of Normalized Eigenfunctions of the Spectral Problem in the Case of Weight Function Satisfying the Lipschitz Condition”. Journal of Zankoy Sulaimani - Part A 15, no. 1 (December 17, 2012): 79–94. Accessed March 3, 2024. https://jzs.univsul.edu.iq/index.php/jzs/article/view/jzs-10235.