1. Boffi, D., Brezzi, F., Fortin, M.: Mixed Finite Elements Methods and Applications. Springer Series in Computational Mechanics. Springer, Berlin (2010)
2. Carstensen, C., Demkowicz, L., Gopalakrishnan, J.: Breaking spaces and forms for the DPG method and applications including Maxwell equations. Comput. Math. Appl. 72, 494–522 (2016)
3. Cockburn, B.: Static Condensation, Hybridization, and the Devising of the HDG Methods. Lecture Notes in Computational Science and Engineering, vol. 114. Springer, Berlin (2015)
4. Gerritsma, M.: Edge functions for spectral element methods. In: Spectral and High Order Methods for Partial Differential Equations, pp. 199–208. Springer, Berlin (2011)
5. Gerritsma, M., Jain, V., Zhang, Y., Palha, A.: Algebraic dual polynomials for the equivalence of curl-curl problems (2018). arXiv:1805.00114