@article{ZVMMF_1983_23_4_a10,
     author = {U. Langer},
     title = {Iterative solution of some schemes of the finite element method for elliptic equations of order $2n$, $n\ge1$},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {881--891},
     publisher = {mathdoc},
     volume = {23},
     number = {4},
     year = {1983},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1983_23_4_a10/}
}