Arham, Aulia, and Ozzy Secio Riza. “Reversible Data Hiding Using Hybrid Method of Difference Expansion on Medical Image”. Jurnal Ilmiah Teknik Elektro Komputer Dan Informatika, vol. 6, no. 2, Jan. 2021, pp. 11-19, doi:10.26555/jiteki.v6i2.16965.