“Delay Differential Equation of the 2nd Order and it’s an Oscillation Yardstick”.
Baghdad Science Journal
20, no. 3(Suppl.) (June 20, 2023): 1116. Accessed July 4, 2025.
https://bsj-ojs.uobaghdad.edu.iq/index.php/BSJ/article/view/7778
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