Sciumè, C., G. Geraci, F. Pisello, F. Li Volsi, M. Cajozzo, and G. Modica. 2003. “ENDOSCOPIC REMOVAL OF IMPACTED DORMIA IN A ‘DIFFICULT’ RESIDUAL CHOLEDOCHELITHIASIS. CASE REPORT”. Annali Italiani Di Chirurgia 74 (2):209-12. https://annaliitalianidichirurgia.it/index.php/aic/article/view/1945.