@article{AMI_2004_31_a2,
     author = {Florian Luca},
     title = {Primitive divisors of {Lucas} sequences and prime factors of x2 + 1 and x4 + 1},
     journal = {Annales mathematicae et informaticae},
     pages = {19--24},
     publisher = {mathdoc},
     volume = {31},
     year = {2004},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AMI_2004_31_a2/}
}