@article{JRAM_1985__356_152696,
     author = {D.J. Lewis and Jan Turk},
     title = {Repetitiveness in binary recurrences.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {19--48},
     publisher = {mathdoc},
     volume = {356},
     year = {1985},
     zbl = {0551.10012},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1985__356_152696/}
}