@article{SLC_1993_31_a7,
     author = {Pierre-Andr\'e Picon},
     title = {Conservation of the {Integrality} of {Certain} {Quotients} by {Iterated} {Substitutions} of {Lucas} {Numbers}},
     journal = {S\'eminaire lotharingien de combinatoire},
     year = {1993},
     volume = {31},
     url = {http://geodesic.mathdoc.fr/item/SLC_1993_31_a7/}
}