@article{10_4064_aa_7_2_161_166,
     author = {Stanis{\l}aw Knapowski and W Sta\'s},
     title = {A note on a theorem of {Hardy} and {Littlewood}},
     journal = {Acta Arithmetica},
     pages = {161--166},
     publisher = {mathdoc},
     volume = {7},
     number = {2},
     year = {1961},
     doi = {10.4064/aa-7-2-161-166},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa-7-2-161-166/}
}