@article{10_4064_ap_11_3_203_207,
     author = {J. Kordylewski and M. Kuczma},
     title = {On some linear functional equations. {II}},
     journal = {Annales Polonici Mathematici},
     pages = {203--207},
     publisher = {mathdoc},
     volume = {11},
     number = {3},
     year = {1961},
     doi = {10.4064/ap-11-3-203-207},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-11-3-203-207/}
}