Bahat, Feni, Winsy Weku, and Chriestie Montolalu. “Analysis of Changes in Green Land Cover of North Minahasa Gold Mine With Landsat 8 Images Using the Normalized Difference Vegetation Index”. Operations Research: International Conference Series 2, no. 4 (December 5, 2021): 93–101. Accessed January 14, 2026. https://www.iorajournal.org/index.php/Orics/article/view/182.