Max-Planck-Institute for Dynamics of Complex Technical Systems, Sandtorstr 1, 39106 Magdeburg, Germany.|Max-Planck-Institute for Dynamics of Complex Technical Systems, Sandtorstr 1, 39106 Magdeburg, Germany.|Max-Planck-Institute for Dynamics of Complex Technical Systems, Sandtorstr 1, 39106 Magdeburg, Germany.|Max-Planck-Institute for Dynamics of Complex Technical Systems, Sandtorstr 1, 39106 Magdeburg, Germany.