Apipunyasopon, Lukkana, Punnapa Weerapong, Nalinpun Buranawanichwong, and Sakda Kingkaew. 2020. “Investigation of the dosimetric and volumetric changes using DIR method based on CT-CBCT images in nasopharynx cancer patients”. Journal of Thai Association of Radiation Oncology 26 (2):R115-1R126. https://he01.tci-thaijo.org/index.php/jtaro/article/view/243775.