Wibowo, Gatot Murti, Rasyid Rasyid, and Ahkmad Haris Sulistiyadi. 2015. “Implementation of Compliance Testing Program on a Direct Digital Radiography (DDR) X-Ray System at the Radiography and Imaging Laboratory of the Health Polytechnic Ministry of Health Semarang”. LINK 10 (2):790-98. https://doi.org/10.31983/link.v10i2.263.