What to Begin with?. project baikal, Irkutsk, Russian Federation, v. 10, n. 37-38, p. 26–27, 2013. DOI: 10.7480/projectbaikal.37-38.568. Disponível em: https://projectbaikal.com/index.php/pb/article/view/568. Acesso em: 10 may. 2026.