RADJAGOEKGOEK, Robert Pangihutan. THE PREPARATION OF OWNER ESTIMATE IN RIG SERVICE CONTRACTS IN UPSTREAM OIL AND GAS BUSINESS ACTIVITIES ACCORDING TO LEGAL CERTAINTY PRINCIPLES. Global Legal Review, [S. l.], v. 3, n. 1, p. 58–72, 2023. DOI: 10.19166/glr.v3i1.4716. Disponível em: https://ojs.uph.edu/index.php/GLR/article/view/4716. Acesso em: 20 nov. 2025.