@article{NUMA_1980__34_132658,
     author = {L. Babuska and J. Osborn},
     title = {Analysis of {Finite} {Element} {Methods} for {Second} {Order} {Boundary} {Value} {Problems} {Using} {Mesh} {Dependent} {Norms.}},
     journal = {Numerische Mathematik},
     pages = {41--62},
     publisher = {mathdoc},
     volume = {34},
     year = {1980},
     zbl = {0404.65055},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1980__34_132658/}
}