@article{RosenblumKurthsSchaeferetal.1998,
  author    = {Rosenblum, Michael and Kurths, J{\"u}rgen and Sch{\"a}fer, Carsten and Abel, Hans-Henning},
  title     = {Heartbeat synchronized with ventilation},
  year      = {1998},
  language  = {en}
}
@phdthesis{Schaefer1998,
  author    = {Sch{\"a}fer, Carsten},
  title     = {Analysis of synchronization in complex systems: application to physiological data},
  address   = {Potsdam},
  pages     = {99 S. : graph. Darst.},
  year      = {1998},
  language  = {en}
}