@phdthesis{Wetzel1991,
  author      = {Joachim Wetzel},
  title       = {Anforderungen an progressive CAP-Systeme und Ans{\"a}tze ihrer rationellen Entwichlung},
  type        = {doctoralthesis},
  pages       = {V, 141 S.: Ill., Anl.},
  year        = {1991},
}