S. Georgopoulos, E. Felekouras, and F. Markatis et al., “Retroperitoneal tumor invasion of the inferior vena cava.A single-centre experience in tumor thrombectomy”, Acta Biomed, vol. 81, no. 3, pp. 185–188, Feb. 2011, Accessed: Apr. 22, 2026. [Online]. Available: https://www.mattioli1885journals.com/index.php/actabiomedica/article/view/794