@article{CMH_1981__56_139867,
     author = {J\"urgen Moser},
     title = {An example of a {Schroedinger} equation with almost periodic potential and nowhere dense spectrum.},
     journal = {Commentarii mathematici Helvetici},
     pages = {198--224},
     publisher = {mathdoc},
     volume = {56},
     year = {1981},
     zbl = {0477.34018},
     url = {http://geodesic.mathdoc.fr/item/CMH_1981__56_139867/}
}