@article{M2AN_2012__46_4_797_0,
     author = {Lin, Qun and Xie, Hehu},
     title = {A {Superconvergence} result for mixed finite element approximations of the eigenvalue problem},
     journal = {ESAIM: Mathematical Modelling and Numerical Analysis },
     pages = {797--812},
     publisher = {EDP-Sciences},
     volume = {46},
     number = {4},
     year = {2012},
     doi = {10.1051/m2an/2011065},
     mrnumber = {2891470},
     zbl = {1277.65091},
     language = {en},
     url = {http://www.numdam.org/articles/10.1051/m2an/2011065/}
}