@article{PORMA_1996__53_3_47560,
     author = {Luo, Ming},
     title = {Pentagonal numbers in the {Lucas} sequence.},
     journal = {Portugaliae mathematica},
     pages = {325--329},
     year = {1996},
     volume = {53},
     number = {3},
     zbl = {0854.11011},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PORMA_1996__53_3_47560/}
}