Onyeka, F. C., B. O. Mama, and T. E. Okeke. “Exact Three-Dimensional Stability Analysis of Plate Using a Direct Variational Energy Method”. Civil Engineering Journal 8, no. 1 (January 1, 2022): 60–80. Accessed July 1, 2025. https://www.civilejournal.org/index.php/cej/article/view/3161.