@article{10_14708_cm_v9i2_5551,
     author = {Z. Frydrych},
     title = {O pewnym uog\'olnieniu metody sumacyjnej {Hammersteina} w r\'ownaniach r\'o\.zniczkowych drugiego rz\k{e}du},
     journal = {Commentationes Mathematicae},
     pages = { 237--266},
     publisher = {mathdoc},
     volume = {9},
     number = {2},
     year = {1965},
     doi = {10.14708/cm.v9i2.5551},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/cm.v9i2.5551/}
}