“DEVELOPMENT OF THE METHOD OF INDIRECT STEGANOGRAPHIC DATA HIDING IN THE CONTAINER IMAGE CONTOUR”. Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska 8, no. 4 (December 16, 2018): 20–23. Accessed September 15, 2026. https://ph.pollub.pl/index.php/iapgos/article/view/793.