@article{GDZPPN002197502,
title = {Arithmetic progressions of arbitrary length and consisting only of primes and almost primes.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {316},
year = {1980},
pages = {200-208},
zbl = {0422.10043},
url = {http://dml.mathdoc.fr/item/GDZPPN002197502}
}
Grosswald, E. Arithmetic progressions of arbitrary length and consisting only of primes and almost primes.. Journal für die reine und angewandte Mathematik, Tome 316 (1980) pp. 200-208. http://gdmltest.u-ga.fr/item/GDZPPN002197502/