Spina, M., V. Luppi, J. Chiappi, F. Bagnis, and G. Rocca. “Triradiate Cartilage Fracture of the Acetabulum Treated Surgically: Triradiate Cartilage Fracture”. Acta Biomedica Atenei Parmensis, vol. 90, no. 1, Jan. 2019, pp. 116-21, doi:10.23750/abm.v90i1.7263.