@article{SiepmannSchuhLevering2005,
  author    = {Thomas Siepmann and G. Schuh and V. Levering},
  title     = {PROPLAN / Schuh, G.; Siepmann, Th.; Levering, V.},
  journal   = {Handbook on architectures of information systems : with 24 tables / Peter Bernus ... (ed.)},
  year      = {2005},
}