@article{10_21136_AM_1982_103983,
     author = {\v{C}erv, V\'aclav and Segeth, Karel},
     title = {A comparison of the accuracy of the finite-difference solution to boundary value problems for the {Helmholtz} equation obtained by direct and iterative methods},
     journal = {Applications of Mathematics},
     pages = {375--390},
     publisher = {mathdoc},
     volume = {27},
     number = {5},
     year = {1982},
     doi = {10.21136/AM.1982.103983},
     mrnumber = {0674982},
     zbl = {0511.65074},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/AM.1982.103983/}
}