Fadda, P., L. La Civita, A. Zignego, and C. Ferri. “A Clinico-Serological Investigation of Arthritis in Patients With or Without Cryoglobulinemic Syndrome”. Reumatismo, vol. 54, no. 4, Dec. 2002, pp. 316-23, doi:10.4081/reumatismo.2002.316.