Ruaro, B., A. Sulli, E. Alessandri, F. Ravera, and M. Cutolo. “Coexistence of Osteopoikilosis With Seronegative Spondyloarthritis and Raynaud’s Phenomenon: First Case Report With Evaluation of the Nailfold Capillary Bed and Literature Review”. Reumatismo, vol. 64, no. 5, Dec. 2012, pp. 335-9, doi:10.4081/reumatismo.2012.335.