@article{GDZPPN002183676,
title = {Primitive roots modulo a prime as consecutive terms of an arithmetic progression.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {238},
year = {1969},
pages = {185-188},
zbl = {0172.32502},
url = {http://dml.mathdoc.fr/item/GDZPPN002183676}
}
Vegh, Emanuel. Primitive roots modulo a prime as consecutive terms of an arithmetic progression.. Journal für die reine und angewandte Mathematik, Tome 238 (1969) pp. 185-188. http://gdmltest.u-ga.fr/item/GDZPPN002183676/