@article{JIS_2005__8_5_a3,
     author = {Kihel,  Omar and Luca,  Florian},
     title = {Perfect powers with all equal digits but one},
     journal = {Journal of integer sequences},
     year = {2005},
     volume = {8},
     number = {5},
     zbl = {1100.11014},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JIS_2005__8_5_a3/}
}