@article{JRAM_1909__135_149299,
     author = {L.E. Dickson},
     title = {On the congruence xn + yn + zn ... 0 (mod p).},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {134--141},
     publisher = {mathdoc},
     volume = {135},
     year = {1909},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1909__135_149299/}
}