@article{JRAM_1981__326_152366,
     author = {Michael D. Hirschhorn and David C. Hunt},
     title = {A simple proof of the {Ramanujan} conjecture for powers of 5.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {1--17},
     publisher = {mathdoc},
     volume = {326},
     year = {1981},
     zbl = {0452.10015},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1981__326_152366/}
}