@article{RCM_2012_46_1_a4,
     author = {Jhon J. Bravo and Florian Luca},
     title = {Powers of {Two} in {Generalized} {Fibonacci} {Sequences}},
     journal = {Revista colombiana de matematicas},
     pages = {67--79},
     year = {2012},
     volume = {46},
     number = {1},
     url = {http://geodesic.mathdoc.fr/item/RCM_2012_46_1_a4/}
}