Bešič, Nikola, Marta Dremelj, and Gasper Pilko. “Locoregional Disease Control After External Beam Radiotherapy in 91 Patients With Differentiated Thyroid Carcinoma and PT4 Tumor Stage – A Single Institution Experience”. Radiology and Oncology 52, no. 4 (December 17, 2018). Accessed July 28, 2026. https://www.radioloncol.com/index.php/ro/article/view/3065.