@article{NUMA_1988__53_1-2_133289,
     author = {Rolf Stenberg},
     title = {A {Family} of {Mixed} {Finite} {Elements} for the {Elasticity} {Problem.}},
     journal = {Numerische Mathematik},
     pages = {513--538},
     publisher = {mathdoc},
     volume = {53},
     number = {1-2},
     year = {1988},
     zbl = {0632.73063},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1988__53_1-2_133289/}
}