@article{Sommer,
  author    = {Sommer, Thomas},
  title     = {Smart Trends in Telekommunikation und Internettechnologien},
  series = {OVE / GIT Newsletter / Energy goes ICT / Smart Metering Journal / e\&i / Heft 10 / Verlag: Springer / 2011},
  journal   = {OVE / GIT Newsletter / Energy goes ICT / Smart Metering Journal / e\&i / Heft 10 / Verlag: Springer / 2011},
  subject      = {Telecommunication},
  language  = {de}
}
@misc{Sommer,
  author    = {Sommer, Thomas},
  title     = {Smart Trends in Telecommunications \& Internet Technologies},
  subject      = {Telecommunication},
  language  = {de}
}
@misc{Sommer,
  author    = {Sommer, Thomas},
  title     = {Was macht das Internet so schnell?},
  subject      = {Internet},
  language  = {de}
}