RÁBANO, I.; GUTIÉRREZ-MARCO, J. C. Primitivo Hernández-Sampelayo (1880−1959): Paleozoic ironstones and fossils. Boletín Geológico y Minero, [S. l.], v. 133, n. 2, p. 7–43, 2022. DOI: 10.21701/bolgeomin/133.2/001. Disponível em: https://bgm.revistas.csic.es/index.php/bgm/article/view/34. Acesso em: 4 may. 2025.