@article{PORMA_1991__48_4_115768,
     author = {Morgado, Jos\'e},
     title = {Note on a {Shannon's} theorem concerning the {Fibonacci} numbers and {Diophantine} quadruples},
     journal = {Portugaliae mathematica},
     pages = {429--439},
     publisher = {mathdoc},
     volume = {48},
     number = {4},
     year = {1991},
     mrnumber = {1147609},
     zbl = {0768.11008},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PORMA_1991__48_4_115768/}
}