@article{MM2_1996__90_2_156201,
     author = {Umberto Zannier},
     title = {On periodic mod p sequences and {G-functions} {(On} a conjecture of {Ruzsa).}},
     journal = {Manuscripta mathematica},
     pages = {391--402},
     publisher = {mathdoc},
     volume = {90},
     number = {2},
     year = {1996},
     zbl = {0864.11005},
     url = {http://geodesic.mathdoc.fr/item/MM2_1996__90_2_156201/}
}