@article{SchaeferHeil2006,
  author    = {Horst Sch{\"a}fer and G{\"u}nter Heil},
  title     = {Modeling and Graphic Presentation of Acid-Base Titration Curves. Presentation of an Alternative Method},
  journal   = {The Chemical Educator. 7 (2002), H. 6},
  pages     = {339 -- 346},
  year      = {2006},
}