@article{AM2_1986__31_137148,
     author = {Maciej Sablik},
     title = {On extending functions to solutions of some functional equations. {(Short} {Communications).}},
     journal = {Aequationes mathematicae},
     pages = {118--118},
     publisher = {mathdoc},
     volume = {31},
     year = {1986},
     zbl = {0604.39005},
     url = {http://geodesic.mathdoc.fr/item/AM2_1986__31_137148/}
}