A Penalty-Free or Penalty-Factor-Free DG Method with a Locally Reconstructed Curl Operator for the Maxwell Eigenproblem. Commun. Comput. Phys. [Internet]. 2025 Aug. 23 [cited 2026 Mar. 14];38(3):887-922. Available from: https://gsp.tricubic.dev/cicp/article/view/7387