@book{HaenselNeumannAlbrecht1996,
  author    = {Horst H{\"a}nsel and Werner Neumann and Fred Albrecht},
  title     = {Physik : Bd. 4 Molek{\"u}le und Festk{\"o}rper},
  volume    = {4},
  isbn      = {3-86025-314-X},
  year      = {1996},
}