UÇAL, İrem; KAHRAMAN, Cengiz. Fuzzy real options valuation for oil investments. Technological and Economic Development of Economy, [S. l.], v. 15, n. 4, p. 646–669, 2009. DOI: 10.3846/1392-8619.2009.15.646-669. Disponível em: https://journals.vilniustech.lt/index.php/TEDE/article/view/6477. Acesso em: 15 may. 2025.