Kevin P. Nuckolls, Michael G. Scheer, Dillon Wong, Myungchul Oh, Ryan L. Lee, Jonah Herzog-Arbeitman, Kenji Watanabe, Takashi Taniguchi, Biao Lian, Ali Yazdani. "Spectroscopy of the fractal Hofstadter energy spectrum." Nature, 2025. doi:10.1038/s41586-024-08550-2