@article{AM2_1973__9_136378,
     author = {K. LAJK\'O},
     title = {Applications of {Extensions} of {Additive} {Functions} {(Short} {Communication)}},
     journal = {Aequationes mathematicae},
     pages = {313--314},
     publisher = {mathdoc},
     volume = {9},
     year = {1973},
     url = {http://geodesic.mathdoc.fr/item/AM2_1973__9_136378/}
}