Valentini, Roberto, et al. “Proximal Cut-Out in Pertrochanteric Femural Fracture”. Acta Biomedica Atenei Parmensis, vol. 85, no. 2, Aug. 2014, pp. 144-51, https://www.mattioli1885journals.com/index.php/actabiomedica/article/view/3433.