@article{OhrnbergerWassermannScherbaumetal.1999,
  author    = {Matthias Ohrnberger and J{\"u}rgen Wassermann and Frank Scherbaum and E. N. Budi and J. Gossler},
  title     = {Detection and classification of seismic signals of volcanic origin at Mt. Merapi (Indonesia)},
  year      = {1999},
}