@article{BSMF_1992__120_4_507_0,
     author = {Erd\"os, P. and Jo\'o, M. and Jo\'o, I.},
     title = {On a problem of {Tamas} {Varga}},
     journal = {Bulletin de la Soci\'et\'e Math\'ematique de France},
     pages = {507--521},
     publisher = {Soci\'et\'e math\'ematique de France},
     volume = {120},
     number = {4},
     year = {1992},
     doi = {10.24033/bsmf.2196},
     mrnumber = {93m:11076},
     zbl = {0787.11002},
     language = {en},
     url = {http://archive.numdam.org/articles/10.24033/bsmf.2196/}
}