@article{BUMI_2002_8_5B_1_a6,
     author = {Fabbri, R.},
     title = {On the {Lyapunov} exponent and exponential dichotomy for the quasi-periodic {Schr\"odinger} operator},
     journal = {Bollettino della Unione matematica italiana},
     pages = {149--161},
     publisher = {mathdoc},
     volume = {Ser. 8, 5B},
     number = {1},
     year = {2002},
     zbl = {1177.34108},
     mrnumber = {1017741},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/BUMI_2002_8_5B_1_a6/}
}