@article{10_1007_s10492_011_0030_3,
     author = {Zhang, Tie and Zhang, Shuhua},
     title = {Finite element derivative interpolation recovery technique and superconvergence},
     journal = {Applications of Mathematics},
     pages = {513--531},
     publisher = {mathdoc},
     volume = {56},
     number = {6},
     year = {2011},
     doi = {10.1007/s10492-011-0030-3},
     mrnumber = {2886235},
     zbl = {1249.65258},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.1007/s10492-011-0030-3/}
}