Annjhih Hsiao, Takao Takenouchi, Hiroaki Kikuchi, Kazuo Sakiyama, and Noriyuki Miura, “More Accurate and Robust PRNU-based Source Camera Identification with 3-Step 3-Class Approach,” In Proc. International Workshop on Digital-forensics and Watermarking (IWDW’21), LNCS 13180,Springer-Verlag, pp.87–101 (Nov., 2021).