@article{ADM_2007_3_a9,
     author = {Imre K\'atai},
     title = {Distribution of arithmetical functions on some subsets of integers},
     journal = {Algebra and discrete mathematics},
     pages = {87--98},
     publisher = {mathdoc},
     number = {3},
     year = {2007},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ADM_2007_3_a9/}
}