GOLUBEV, Andrey. Improvement of the official statistical record-keeping. Gosudarstvennaya Sluzhba, [S. l.], v. 15, n. 4, p. 20–22, 2013. Disponível em: https://gosudarstvennaya-sluzhba.owebs.ru/article/view/21773. Acesso em: 9 nov. 2026.