@article {MR2997471,
	title = {Basic principles of virtual element methods},
	journal = {Math. Models Methods Appl. Sci.},
	volume = {23},
	number = {1},
	year = {2013},
	pages = {199{\textendash}214},
	issn = {0218-2025},
	doi = {10.1142/S0218202512500492},
	url = {https://doi.org/10.1142/S0218202512500492},
	author = {Beir{\~a}o da Veiga, L. and Brezzi, F. and Andrea Cangiani and Manzini, G. and Marini, L. D. and Russo, A.}
}
