@article{SchaeferRessSpahnetal.1998,
  author    = {Sch{\"a}fer, Horst and Ress, H. R. and Spahn, W. and Ebel, R. (u.a.)},
  title     = {Start of misfit relaxation in GaAs-ZnSe heterostructures},
  series = {Journal of Crystal Growth. 184-185 (1998)},
  journal   = {Journal of Crystal Growth. 184-185 (1998)},
  isbn      = {0022-0248},
  pages     = {90 -- 94},
  year      = {1998},
  language  = {en}
}
@article{SchaeferHeil2002,
  author    = {Sch{\"a}fer, Horst and Heil, G{\"u}nter},
  title     = {Modeling and Graphic Presentation of Acid-Base Titration Curves. Presentation of an Alternative Method},
  series = {The Chemical Educator. 7 (2002), H. 6},
  journal   = {The Chemical Educator. 7 (2002), H. 6},
  isbn      = {1430-4171},
  pages     = {339 -- 346},
  year      = {2002},
  language  = {en}
}