R. B. Alday, J. G. Andal, M. C. Ilagan, N. D. Meliton, and M. Mercado, “PEKEMON: A Mobile Application for Detecting Fake Money”, jpair, vol. 25, no. 1, pp. 80–90, Jun. 2016, doi: 10.7719/jpair.v25i1.391.