Kuhn, J. P.; Busemann, A.; Lerch, M. M.; Heidecke, C. D.; Hosten, N.; Puls, R. (2010). "Percutaneous Biliary Drainage in Patients with Nondilated Intrahepatic Bile Ducts Compared with Patients with Dilated Intrahepatic Bile Ducts". American Journal of Roentgenology. 195 (4): 851–857. doi:10.2214/AJR.09.3461. PMID20858809.
Kuhn, J. P.; Busemann, A.; Lerch, M. M.; Heidecke, C. D.; Hosten, N.; Puls, R. (2010). "Percutaneous Biliary Drainage in Patients with Nondilated Intrahepatic Bile Ducts Compared with Patients with Dilated Intrahepatic Bile Ducts". American Journal of Roentgenology. 195 (4): 851–857. doi:10.2214/AJR.09.3461. PMID20858809.