@article{JIS_2000__3_2_a4,
     author = {Dubner,  Harvey and Granlund,  Torbj\"orn},
     title = {Primes of the form \((b^n+1)/(b+1)\)},
     journal = {Journal of integer sequences},
     year = {2000},
     volume = {3},
     number = {2},
     zbl = {1010.11070},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JIS_2000__3_2_a4/}
}