Durkbin Cho, Ludmil Zikatanov. A multilevel preconditioning for generalized finite element method problems on unstructured simplicial meshes. J. Num. Math., 15(3):163-180, 2007. [doi]
@article{ChoZ07,
title = {A multilevel preconditioning for generalized finite element method problems on unstructured simplicial meshes},
author = {Durkbin Cho and Ludmil Zikatanov},
year = {2007},
doi = {10.1515/jnma.2007.008},
url = {http://dx.doi.org/10.1515/jnma.2007.008},
researchr = {https://researchr.org/publication/ChoZ07},
cites = {0},
citedby = {0},
journal = {J. Num. Math.},
volume = {15},
number = {3},
pages = {163-180},
}