YANG, Huang. Popper and Kolakowski: Two Challenges to Historical Materialism. Frontiers in Humanities and Social Sciences, [S. l.], v. 5, n. 11, p. 187–197, 2025. DOI: 10.54691/x65h8x26. Disponível em: https://fhssjournal.org/index.php/ojs/article/view/433. Acesso em: 23 may. 2026.