D. Antonijević, D. Ilić, V. Medić, S. Dodić, K. Obradović-Djuričić, and Z. Rakočević, “Evaluation of conventional and digital radiography capacities for distinguishing dental materials on radiograms depending on the present radiopacifying agent”, Vojnosanit Pregl, vol. 71, no. 11, Oct. 2014, doi: 10.2298/4272.