@article{10_14708_cm_v20i1_5886,
     author = {K. Kapturkiewicz},
     title = {On the mixed problem for the {Poisson} equation in the quart-plane},
     journal = {Commentationes Mathematicae},
     pages = { 97--109},
     publisher = {mathdoc},
     volume = {20},
     number = {1},
     year = {1977},
     doi = {10.14708/cm.v20i1.5886},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/cm.v20i1.5886/}
}