@phdthesis{Helmes2004,
  author      = {Barbara Helmes},
  title       = {Untersuchung der Transferionisation in protoninduzierten Stoßprozessen an Heliumatomen},
  type        = {doctoralthesis},
  pages       = {297},
  school      = {Universit{\"a}tsbibliothek Johann Christian Senckenberg},
  year        = {2004},
}