@article{VSPUI_2014_2_a9,
     author = {A. Wittig and M. Berz},
     title = {High period fixed points, stable and unstable manifolds, and chaos in accelerator transfer maps},
     journal = {Vestnik Sankt-Peterburgskogo universiteta. Prikladna\^a matematika, informatika, processy upravleni\^a},
     pages = {93--110},
     publisher = {mathdoc},
     number = {2},
     year = {2014},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/VSPUI_2014_2_a9/}
}