[1]
B. M. Popovic, M. V. Bandjur, and A. M. Raicevic, “Robust Fingerprint Enhancement by Directional Filtering in Fourier Domain”, ELEKTRON ELEKTROTECH, vol. 107, no. 1, pp. 37–40, Jan. 2011, doi: 10.5755/j02.eie.9170.