@article{CaoChen2018,
  title={Anisotropic error estimates of the linear virtual element method on polygonal meshes},
  author={Cao, Shuhao and Chen, Long},
  journal={SIAM Journal on Numerical Analysis},
  volume={56},
  number={5},
  pages={2913--2939},
  year={2018},
  publisher={SIAM}
}