Yousif, Ammar Moufak J., and Mahir K. AL-a'zawi. “Image Stego Detection Using Higher Order Statistics”. Nahrain University College of Engineering Journal, vol. 13, no. 2, Mar. 2010, pp. 141-9, https://oldjournal.eng.nahrainuniv.edu.iq/index.php/main/article/view/591.