@article{AM2_1974__11_136444,
     author = {Halina Swiatak},
     title = {On a {Class} of {Functional} {Equations} with {Several} {Unknown} {Functions.} {(Short} {Communication).}},
     journal = {Aequationes mathematicae},
     pages = {117--117},
     publisher = {mathdoc},
     volume = {11},
     year = {1974},
     url = {http://geodesic.mathdoc.fr/item/AM2_1974__11_136444/}
}