@book{RosenblumSchaeferAbeletal.1997,
  author    = {Rosenblum, Michael and Sch{\"a}fer, Carsten and Abel, Hans-Henning and Kurths, J{\"u}rgen},
  title     = {Interrelationship of Parasympathetic Innervation of the Sinoatrial Node and the Atrioventricular Node of Human Heart},
  issn      = {1120-1797},
  year      = {1997},
  language  = {en}
}
@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}
}
@article{SchiekDrepperEngbertetal.1998,
  author    = {Schiek, Michael and Drepper, Friedhelm R. and Engbert, Ralf and Suder, Katrin and Abel, Hans-Henning},
  title     = {Cardiorespiratory Synchronization},
  isbn      = {3-540-63481-9},
  year      = {1998},
  abstract  = {The complex behaviour of cardiorespiratory dynamics is shown to be related to the interaction between several physiological oscillators. This study is based on electrocardiogram and respiratory flow data obtained from 3 different subjects during paced breathing at 10 different pacing cycle lengths ranging from 5 s to 12 s. Two different methods ideally suited for the analysis of synchronization pattern of coupled oscillators are applied: 1. Symbolic dynamics based on symbol coding adapted for the detection of respiratory modulation of cardiac parasympathetic activity discloses two regimes of different synchronization behaviour within the frequency area corresponding to the Arnold tongue of 1:1 frequency-locking between respiratory flow and respiratory heartbeat variation (respiratory sinus arrhythmia). 2. The analysis of the phase shift between respiratory flow and respiratory sinus arrhythmia indicates that synchronization is not a static but a dynamic phenomenon. The observed dependence of the phase shift on respiratory cycle length shows large inter-individual variation. These findings turn out to be further hints for the existence of an additional central oscillator in the frequency range of respiration interacting with the central respiratory oscillator driving mechanical respiration.},
  language  = {en}
}
@article{RosenblumKurthsPikovskijetal.1998,
  author    = {Rosenblum, Michael and Kurths, J{\"u}rgen and Pikovskij, Arkadij and Schafer, C. and Tass, Peter and Abel, Hans-Henning},
  title     = {Synchronization in Noisy Systems and Cardiorespiratory Interaction},
  year      = {1998},
  language  = {en}
}
@article{RosenblumAbelKurthsetal.1999,
  author    = {Rosenblum, Michael and Abel, Hans-Henning and Kurths, J{\"u}rgen and Sch{\"a}fer, Carsten},
  title     = {Synchronization in the human cardiorespiratory system},
  year      = {1999},
  language  = {en}
}