Jingcheng Zheng, Weiwei Zhang, Yun Huang, Jiwei Shao, Yu Chen, Yuwu Chi. "Photochromic Cs
                    <sub>2</sub>
                    Pb(NO
                    <sub>3</sub>
                    )
                    <sub>2</sub>
                    Br
                    <sub>2</sub>
                    Perovskite Nanosheets as a Novel Anti‐Counterfeiting Material." Angewandte Chemie International Edition (2025). https://doi.org/10.1002/anie.202520855