@article {IOPORT.50083600,
    author       = {Glitzky, Annegret and Griepentrog, Jens A.},
    title        = {Discrete Sobolev-Poincar\'e inequalities for Voronoi finite volume approximations},
    year         = {2010},
    journal      = {SIAM J. Numerical Analysis},
    volume       = {48},
    number       = {1},
    pages        = {372-391},
    doi          = {10.1137/09076502X},
    identifier   = {50083600},
}