@article{CMH_1984__59_139988,
     author = {Eva Bayer-Fluckiger},
     title = {Definite unimodular lattices having an automorphism of given characteristic polynomial.},
     journal = {Commentarii mathematici Helvetici},
     pages = {509--538},
     publisher = {mathdoc},
     volume = {59},
     year = {1984},
     zbl = {0558.10029},
     url = {http://geodesic.mathdoc.fr/item/CMH_1984__59_139988/}
}