Calderazzi, Filippo, Massimo Pompili, Antonio Carolla, Paolo Schiavi, Giulia Groppi, and Francesco Ceccarelli. 2015. “Gamma nail™ in Pertrochanteric Fractures in Elderly Patients: Is Anatomical Reduction Necessary? A Preliminary Study”. Acta Bio Medica Atenei Parmensis 86 (3), 260-66. https://www.mattioli1885journals.com/index.php/actabiomedica/article/view/4248.