Peter
Sarnak
Kollár, A. J., & Sarnak, P. . (2021). Gap sets for the spectra of cubic graphs. Communications of the American Mathematical Society, 1, 1–38. http://doi.org/10.1090/cams/3 (Original work published October 2021)
Kollár, A. J., Fitzpatrick, M. ., Sarnak, P. ., & Houck, A. A. (2020). Line-Graph Lattices: Euclidean and Non-Euclidean Flat Bands, and Implementations in Circuit Quantum Electrodynamics. Commun. Math. Phys., 376, 1909–1956. http://doi.org/10.1007/s00220-019-03645-8 (Original work published 2024)