ROMANUS, Ragnar; YDÉN, Sven. Destructive and Ossifying Spondylitic Changes in Rheumatoid Ankylosing Spondylitis (Pelvo-spondylitis Ossificans). Acta Orthopaedica, [S. l.], v. 22, n. 1-4, p. 88–99, 1952. DOI: 10.3109/17453675208988998. Disponível em: https://actaorthop.org/actao/article/view/30916. Acesso em: 23 may. 2026.