Önsten, I. et al. 1993. Periarticular bone mineral content in rheumatoid arthritis and arthrosis of the hip: Dual photon X-ray absorptiometry in 53 cases. Acta Orthopaedica. 64, 5 (Jan. 1993), 530–532. DOI:https://doi.org/10.3109/17453679308993685.