@article{Georgoulis2009biharmonic,
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  journal={IMA Journal of Numerical Analysis}, 
  title={Discontinuous Galerkin methods for the biharmonic problem}, 
  year={2009},
  volume={29},
  number={3},
  pages={573-594},
  doi={10.1093/imanum/drn015}
  }

@article{babuska1973penalty,
 ISSN = {00361429},
 URL = {http://www.jstor.org/stable/2156320},
 author = {Ivo Babuška and Miloš Zlámal},
 journal = {SIAM Journal on Numerical Analysis},
 number = {5},
 pages = {863--875},
 publisher = {Society for Industrial and Applied Mathematics},
 title = {Nonconforming Elements in the Finite Element Method with Penalty},
 urldate = {2026-02-25},
 volume = {10},
 year = {1973}
}

@InProceedings{Gander2017bcs,
author="Gander, Martin J.
and Liu, Yongxiang",
editor="Lee, Chang-Ock
and Cai, Xiao-Chuan
and Keyes, David E.
and Kim, Hyea Hyun
and Klawonn, Axel
and Park, Eun-Jae
and Widlund, Olof B.",
title="On the Definition of Dirichlet and Neumann Conditions for the Biharmonic Equation and Its Impact on Associated Schwarz Methods",
booktitle="Domain Decomposition Methods in Science and Engineering XXIII",
doi="10.1007/978-3-319-52389-7_31",
year="2017",
publisher="Springer International Publishing",
address="Cham",
pages="303--311",
isbn="978-3-319-52389-7"
}



@incollection{ciarlet1974mixed,
title = {A Mixed Finite Element Method for the Biharmonic Equation},
editor = {Carl {de Boor}},
booktitle = {Mathematical Aspects of Finite Elements in Partial Differential Equations},
publisher = {Academic Press},
pages = {125-145},
year = {1974},
isbn = {978-0-12-208350-1},
doi = {10.1016/B978-0-12-208350-1.50009-1},
author = {P.G. CIARLET and P.A. RAVIART},
}


@article{Bringmann2024penalty,
	author = {Philipp Bringmann and Carsten Carstensen and Julian Streitberger},
	doi = {10.1515/jnma-2023-0028},
	journal = {Journal of Numerical Mathematics},
	lastchecked = {2026-03-01},
	number = {3},
	pages = {257--273},
	title = {Local parameter selection in the C0 interior penalty method for the biharmonic equation},
	title2 = {},
	volume = {32},
	year = {2024}
}

