F. Susilawati Mohamad, F. Mohammad Alsuhimat, M. Afendee Mohamed, M. Mohamad, and A. Amri Jamal, “Detection and Feature Extraction for Images Signatures”, IJET, vol. 7, no. 3.28, pp. 44–48, Aug. 2018, doi: 10.14419/ijet.v7i3.28.20963.