@article{GDZPPN002195097,
title = {The least prime in an arithmetic progression with prime difference.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {302},
year = {1978},
pages = {114-115},
zbl = {0374.10028},
url = {http://dml.mathdoc.fr/item/GDZPPN002195097}
}
Wagstaff, Samuel S. The least prime in an arithmetic progression with prime difference.. Journal für die reine und angewandte Mathematik, Tome 302 (1978) pp. 114-115. http://gdmltest.u-ga.fr/item/GDZPPN002195097/