@article{10_4064_aa_35_4_333_343,
     author = {Robert Freud},
     title = {On sets characterizing additive arithmetical functions, {I}},
     journal = {Acta Arithmetica},
     pages = {333--343},
     publisher = {mathdoc},
     volume = {35},
     number = {4},
     year = {1979},
     doi = {10.4064/aa-35-4-333-343},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa-35-4-333-343/}
}