%0 Journal Article %A Hlaváček, Ivan %A Křížek, Michal %A Pištora, Vladislav %T How to recover the gradient of linear elements on nonuniform triangulations %J Applications of Mathematics %D 1996 %P 241-267 %V 41 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/AM.1996.134325/ %R 10.21136/AM.1996.134325 %G en %F 10_21136_AM_1996_134325