@article{M2AN_1992__26_4_507_0,
     author = {Mons, P. and Rog\'e, G.},
     title = {L{\textquoteright}\'el\'ement $Q_1$-bulle/$Q_1$},
     journal = {ESAIM: Mod\'elisation math\'ematique et analyse num\'erique},
     pages = {507--521},
     publisher = {AFCET - Gauthier-Villars},
     address = {Paris},
     volume = {26},
     number = {4},
     year = {1992},
     mrnumber = {1163979},
     zbl = {0760.65100},
     language = {fr},
     url = {http://www.numdam.org/item/M2AN_1992__26_4_507_0/}
}