“Bounds on Real and Imaginary Parts of Non-Real Eigenvalues of a Non-Definite Sturm-Liouville Differential Equation with Cauchy Boundary Conditions”, JUBPAS, vol. 27, no. 4, pp. 230–235, Sep. 2019, Accessed: May 17, 2025. [Online]. Available: https://www.journalofbabylon.com/index.php/JUBPAS/article/view/2473