JEAN HERSKOVITS. Small-Scale Machine Learning Over Scarce and Unreliable Data: Sovereign Credit Grades Prediction. European Economic Letters (EEL), [S. l.], v. 14, n. 2, p. 3053–3063, 2024. Disponível em: https://www.eelet.org.uk/index.php/journal/article/view/1666. Acesso em: 5 oct. 2025.