AZIS, Musdalifah; DEFUNG, Felisitas; RAMADHANI , Herry; PURNAMASARI, Ike; DARMA, Dio Caisar; NURHIKMAT , Muhammad. Analytical framework for ESG portfolio optimization through ecotourism investment management; evidence from the Indonesian banking sector in IKN buffer cities. Economics and Environment, Poland, v. 97, n. 2, p. 1361, 2026. DOI: 10.34659/eis.2026.97.2.1361. Disponível em: https://ekonomiaisrodowisko.pl/journal/article/view/1361. Acesso em: 7 sep. 2026.