@article{10_4064_aa_15_1_49_70,
     author = {Andrzej Schinzel},
     title = {On primitive prime factors of {Lehmer} numbers {III}},
     journal = {Acta Arithmetica},
     pages = {49--70},
     publisher = {mathdoc},
     volume = {15},
     number = {1},
     year = {1968},
     doi = {10.4064/aa-15-1-49-70},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa-15-1-49-70/}
}