@article{10_21136_AM_1996_134325,
     author = {Hlav\'a\v{c}ek, Ivan and K\v{r}{\'\i}\v{z}ek, Michal and Pi\v{s}tora, Vladislav},
     title = {How to recover the gradient of linear elements on nonuniform triangulations},
     journal = {Applications of Mathematics},
     pages = {241--267},
     publisher = {mathdoc},
     volume = {41},
     number = {4},
     year = {1996},
     doi = {10.21136/AM.1996.134325},
     mrnumber = {1395685},
     zbl = {0870.65093},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/AM.1996.134325/}
}