ASPENBERG, Per. Black holes in bone – irresistible attractors of foreign materials?. Acta Orthopaedica, [S. l.], v. 80, n. 1, p. 2–3, 2009. DOI: 10.1080/17453670902804489. Disponível em: https://actaorthop.org/actao/article/view/18711. Acesso em: 30 may. 2026.