Abdulqader, I. M., and K. C. Lim. “Evaluation of Image Pixels Similarity Measurement Algorithm Accelerated on GPU With OpenACC”. Journal of Telecommunication, Electronic and Computer Engineering (JTEC), vol. 10, no. 2-6, July 2018, pp. 167-72, https://jtec.utem.edu.my/jtec/article/view/4390.