Spratt, Daniel E. “Results of Photon Radiotherapy for Unresectable Salivary Gland Tumors: Is Neutron Radiotherapy’s Local Control Superior?”. Radiology and Oncology 48, no. 1 (February 3, 2014). Accessed July 23, 2026. https://www.radioloncol.com/index.php/ro/article/view/1718.