Harmayanvi Harahap, Luvi, et al. “PAKPONG: An EcotourismBased Business Model of a Village Owned Enterprise (BUMDes) for Improving Community Welfare Toward the Achievement of the Village SDGs in Denai Lama”. International Conference Epicentrum of Economic Global Framework, Feb. 2026, pp. 954-62, https://proceeding.pancabudi.ac.id/index.php/ICEEGLOF/article/view/1684.