@article{ELMA_1983__38_141318,
     author = {Andrzej Makawski},
     title = {On a number-theoretical problem of {Erd\"os.}},
     journal = {Elemente der Mathematik},
     pages = {101--102},
     year = {1983},
     volume = {38},
     url = {http://geodesic.mathdoc.fr/item/ELMA_1983__38_141318/}
}