@article{COMIM_2001_9_1_a4,
     author = {Han\v{c}l, Jaroslav},
     title = {Rational and irrational series consisting of special denominators},
     journal = {Communications in Mathematics},
     pages = {39--44},
     year = {2001},
     volume = {9},
     number = {1},
     mrnumber = {1879639},
     zbl = {1023.11036},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/COMIM_2001_9_1_a4/}
}