Simangunsong, Bintang Charles Hamonangan, and Elias. “Economics of Gap Planting Technology to Rehabilitate Degraded Natural Forests in Indonesia”. Jurnal Sylva Lestari 14, no. 3 (July 22, 2026): 557–570. Accessed September 16, 2026. https://sylvalestari.fp.unila.ac.id/index.php/JHT/article/view/1549.