@article{NUMA_1987__52_5_133223,
     author = {Vitoriano Ruas},
     title = {A {Quadratic} {Finite} {Element} {Method} for solving {Biharmonic} {Problems} in {IRn.}},
     journal = {Numerische Mathematik},
     pages = {33--44},
     year = {1987},
     volume = {52},
     number = {5},
     zbl = {0617.65113},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1987__52_5_133223/}
}