@Article{metzler-1993:eiffel,
  author = 	 {Metzler, Wolfgang and Brelle, Achim and Schmidt, Klaus-Dieter and
Danker, Gerrit and K{\"o}ppe, Matthias and Mahrenholz, Daniel},
  title = 	 {On the Parameter Plane of Nonlinear Coupled Oscillators},
  journal = 	 {Z.~Naturforsch.},
  year = 	 1993,
  volume =	 {48{\,}a},
  pages =	 {655--662}
}