Franco Brezzi, Michel Fortin. Mixed and Hybrid Finite Element Methods. Volume 15 of Springer Series in Computational Mathematics, Springer, 1991. [doi]
@book{BrezziF91,
title = {Mixed and Hybrid Finite Element Methods},
author = {Franco Brezzi and Michel Fortin},
year = {1991},
doi = {10.1007/978-1-4612-3172-1},
url = {https://doi.org/10.1007/978-1-4612-3172-1},
researchr = {https://researchr.org/publication/BrezziF91},
cites = {0},
citedby = {0},
volume = {15},
series = {Springer Series in Computational Mathematics},
publisher = {Springer},
isbn = {978-1-4612-3172-1},
}