BARTSITS, Igor; ILARIONOVA, Tatiana; KORNILOVA, Lydia. Sign of age. Gosudarstvennaya Sluzhba, [S. l.], v. 18, n. 2, p. 8–15, 2016. Disponível em: https://gosudarstvennaya-sluzhba.owebs.ru/article/view/22228. Acesso em: 9 nov. 2026.