@article{M2AN_1981__15_2_119_0,
     author = {Hecht, F.},
     title = {Construction d{\textquoteright}une base de fonctions $P_1$ non conforme \`a divergence nulle dans $\mathbb {R}^3$},
     journal = {RAIRO. Analyse num\'erique},
     pages = {119--150},
     publisher = {Centrale des revues, Dunod-Gauthier-Villars},
     address = {Montreuil},
     volume = {15},
     number = {2},
     year = {1981},
     mrnumber = {618819},
     zbl = {0471.76028},
     language = {fr},
     url = {http://www.numdam.org/item/M2AN_1981__15_2_119_0/}
}