ZHUKOV, Maksim. "Two curves" for the efficiency. Gosudarstvennaya Sluzhba, [S. l.], v. 17, n. 5, p. 116–119, 2015. Disponível em: https://gosudarstvennaya-sluzhba.owebs.ru/article/view/22158. Acesso em: 8 nov. 2026.