@article{10_4064_aa156_4_5,
     author = {Jin-Hui Fang and Yong-Gao Chen},
     title = {On a problem of {Sierpi\'nski}},
     journal = {Acta Arithmetica},
     pages = {373--382},
     publisher = {mathdoc},
     volume = {156},
     number = {4},
     year = {2012},
     doi = {10.4064/aa156-4-5},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa156-4-5/}
}