@article{ETNA_1996__4__a0,
     author = {Yang, Y.D. and Gao, J.B.},
     title = {Remarks on the {Ciarlet-Raviart} mixed finite element},
     journal = {Electronic transactions on numerical analysis},
     pages = {158--164},
     publisher = {mathdoc},
     volume = {4},
     year = {1996},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ETNA_1996__4__a0/}
}