K.Nithhyaadevi, J.S.Jenin, and G.Gandhimathi. “TWO LEVEL IMAGE CRYPTOSYSTEM USING HYBRID-CHAOTIC KEY AND PRNG KEY FOR MULTI-MODALITY DIGITAL IMAGES WITH DISCRETE WAVELET TRANSFORM”. EPRA International Journal of Research and Development (IJRD), vol. 7, no. 6, June 2022, pp. 34-44, https://eprajournals.net/index.php/IJRD/article/view/503.