Abhrendu Bhattacharya, Amit Pimpalkar, Amit R. Welekar, Nilesh Shelke, Debmalya Sanyal, Mrunalini P. Moon. "Secure dual biometric image steganography via CNN-refined chaotic hybrid transform embedding." Scientific Reports (2026). https://doi.org/10.1038/s41598-026-58973-2