Gunasekaran, Arun Kumar, et al. “Hepatocellular Carcinoma With Inferior Vena Cava and Right Atrium Tumor Thrombus”. Acta Medica Lituanica, vol. 28, no. 2, Aug. 2021, pp. 344-8, https://doi.org/10.15388/Amed.2021.28.2.10.