L. Kołodziej-Spirodek, A. Rusiecka, K. Hunia-Pająk, and K. Gutkowski, “Focal lesions of the liver in the course of retroperitoneal fibrosis – case report and brief review of the literature”, Eur J Clin Exp Med, vol. 13, no. 2, pp. 180–186, Jun. 2015.