@article{NUMA_1962__4_131542,
     author = {J.L. Brenner and C. BRENNER},
     title = {The {Popularity} of {Small} {Integers} as {Primitive} {Roots.}},
     journal = {Numerische Mathematik},
     pages = {336--342},
     publisher = {mathdoc},
     volume = {4},
     year = {1962},
     zbl = {0106.03004},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1962__4_131542/}
}