[Update]Add one more reference

src/about.py

@@ -82,4 +82,11 @@ CITATION_BUTTON_TEXT = r"""
   journal={arXiv preprint arXiv:2310.11868},
   year={2023}
 }
+
+@article{zhang2024defensive,
+  title={Defensive Unlearning with Adversarial Training for Robust Concept Erasure in Diffusion Models},
+  author={Zhang, Yimeng and Chen, Xin and Jia, Jinghan and Zhang, Yihua and Fan, Chongyu and Liu, Jiancheng and Hong, Mingyi and Ding, Ke and Liu, Sijia},
+  journal={arXiv preprint arXiv:2405.15234},
+  year={2024}
+}
 """