Fang, Longfei, Mingqing Zhai, and Huiqiu Lin. “Spectral Extremal Problem on $t$ Copies of $\ell$-Cycles”. The Electronic Journal of Combinatorics 31, no. 4 (October 18, 2024): #P4.17. Accessed April 19, 2026. https://www.combinatorics.org/ojs/index.php/eljc/article/view/v31i4p17.