Chathuranga, M., N.B. Darwin, A.B. Ahmad, J. Sandamali, and A. Gohari. “Trends, Advancements, and Future Directions of Unmanned Aerial Vehicle Technology-Based Stockpile Volume Estimation: A Systematic Review”. International Journal of Geoinformatics 21, no. 11 (December 9, 2025): 94–120. Accessed May 19, 2026. https://ijg.journals.publicknowledgeproject.org/index.php/journal/article/view/4605.