Chunqiao Li, Chengtao An, Zhengqi Gao, Fan Yang, Yangfeng Su, Xuan Zeng: Unleashing the Power of Graph Spectral Sparsification for Power Grid Analysis via Incomplete Cholesky Factorization. IEEE Trans. Comput. Aided Des. Integr. Circuits Syst. 42(9): 3053-3066 (2023)