@article{NUMA_1974__22_132255,
     author = {L. Mansfield},
     title = {Higher {Order} {Compatible} {Triangular} {Finite} {Elements.}},
     journal = {Numerische Mathematik},
     pages = {89--98},
     publisher = {mathdoc},
     volume = {22},
     year = {1974},
     zbl = {0265.65011},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1974__22_132255/}
}