(1)
Asatryan, H. A. ANALYSIS OF THE POINT SPECTRUM OF THE STURM-LIOUVILLE OPERATOR WITH CERTAIN BEHAVIOR OF POTENTIAL AT INFINITY. Proc. YSU A: Phys. Math. Sci. 2006, 40 (1 (209), 23-28. https://doi.org/10.46991/PYSUA.2006.40.1.023.