DOUKAS, Konstantinos. Effort vs Value for Money (VfM) How to maximize efficiency in services to ensure VfM. Advances in Social Sciences Research Journal, [S. l.], v. 8, n. 4, p. 305–308, 2021. DOI: 10.14738/assrj.84.10019. Disponível em: https://scholarpublishing.org/journals/index.php/ASSRJ/article/view/4618. Acesso em: 28 may. 2026.