1.
Neamaty A, Khalili Y. THE EIGENVALUE PROBLEMS FOR DIFFERENTIAL PENCILS ON THE HALF LINE. J. Nonlinear Anal. Optim. [Internet]. 2012May8 [cited 2021Dec.6];3(2):111-4. Available from: http://www.math.sci.nu.ac.th/ojs302/index.php/jnao/article/view/85