Thomas, Adejoh, WI Onwuzu Sobechukwu, C Ikegwuonu Nwamaka, and B Nkubli Flavious. “Greyscale Appearance of Film‑screen Radiographic Artefacts in a University Teaching Hospital”. West African Journal of Radiology 22, no. 2 (August 15, 2025): 82–85. Accessed February 10, 2026. https://www.wajr.org/index.php/home/article/view/307.