@article{KoetzKoepkeSchmidtNaakeetal.1996,
  author    = {Joachim Koetz and Heike K{\"o}pke and Gudrun Schmidt-Naake and Peter Zarras and Otto Vogl},
  title     = {Polyanion-polycation complex formation as a function of the position of the functional groups},
  year      = {1996},
}