@article{EngelhardKumkeLoehmannsroeben2006,
  author    = {Sonja Engelhard and Michael Uwe Kumke and Hans-Gerd L{\"o}hmannsr{\"o}ben},
  title     = {Examples of the application of optical process and quality sensing (OPQS) to beer brewing and polyurethane foaming processes},
  doi       = {10.1007/s00216-005-3364-4},
  url       = {http://www.springerlink.com/content/100417},
  year      = {2006},
}