Dr. Zhenlai Han, Tongxing Li, Shurong Sun, and Weisong Chen. “Oscillation Criteria for Second-Order Half-Linear Dynamic Equations on Time Scales”. Global Journal of Science Frontier Research 10, no. 5 (March 15, 2010): -. Accessed May 3, 2024. https://journalofscience.org/index.php/GJSFR/article/view/103.