Abbood, A. A., G. Sulong, and R. Ali. “A New Fingerprint Enhancement Approach Using Image Fusion of Histogram Equalisation and Skeleton”. Journal of Telecommunication, Electronic and Computer Engineering (JTEC), vol. 9, no. 3-5, Oct. 2017, pp. 163-9, https://jtec.utem.edu.my/jtec/article/view/2987.