@article{DenisovKlafterUrbakh2004,
  author    = {Sergey Vadimovich Denisov and J. Klafter and M. Urbakh},
  title     = {Some new aspects of L{\´e}vy walks and flights: directed transport, manipulation through flights and population exchange},
  journal   = {Physica D: Nonlinear Phenomena},
  volume    = {187},
  number    = {1-4},
  pages     = {89 -- 99},
  doi       = {10.1016/j.physd.2003.09.002},
  year      = {2004},
}