@article{M2AN_1974__8_2_19_0,
     author = {Ciarlet, P. G.},
     title = {Sur l'\'el\'ement de {Clough} et {Tocher}},
     journal = {ESAIM: Mathematical Modelling and Numerical Analysis },
     pages = {19--27},
     publisher = {Dunod},
     address = {Paris},
     volume = {8},
     number = {R2},
     year = {1974},
     mrnumber = {381349},
     zbl = {0306.65070},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/item/M2AN_1974__8_2_19_0/}
}