@article{10_4064_aa_91_2_107_115,
     author = {Pelegr{\'\i} Viader and Llu{\'\i}s Bibiloni and Jaume Parad{\'\i}s},
     title = {On a problem of {Alfr\'ed} {R\'enyi}},
     journal = {Acta Arithmetica},
     pages = {107--115},
     publisher = {mathdoc},
     volume = {91},
     number = {2},
     year = {1999},
     doi = {10.4064/aa-91-2-107-115},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa-91-2-107-115/}
}