@article{10_14708_cm_v30i2_6314,
     author = {M. Filar},
     title = {Boundary value problems for the nonhomogeneous {Helmholtz} equation in a rectangular polyhedral angle of the {Euclidean} n-space},
     journal = {Commentationes Mathematicae},
     pages = { 277--284},
     publisher = {mathdoc},
     volume = {30},
     number = {2},
     year = {1991},
     doi = {10.14708/cm.v30i2.6314},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/cm.v30i2.6314/}
}