ZHANG G, CHENG S-S. ELEMENTARY OSCILLATION CRITERIA FOR A THREE TERM RECURRENCE RELATION WITH OSCILLATORY COEFFICIENT SEQUENCE. Tamkang J. Math. [Internet]. 1998 Sep. 1 [cited 2024 Apr. 24];29(3):227-32. Available from: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/4274