@article{AMI_2015_45_a4,
     author = {Bernadette Faye and Florian Luca},
     title = {Pell and {Pell-Lucas} numbers with only one distinct digit},
     journal = {Annales mathematicae et informaticae},
     pages = {55--60},
     year = {2015},
     volume = {45},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AMI_2015_45_a4/}
}