@techreport{Krueger2011,
  type      = {Working Paper},
  author    = {Kr{\"u}ger, Christine},
  title     = {Energiespeicher - Herausforderungen an Forschung und Entwicklung},
  series    = {Technologiebrief},
  institution = {Inst. f{\"u}r Gr{\"u}ndungs- und Innovationsforschung},
  address   = {Wuppertal},
  pages     = {6},
  year      = {2011},
  language  = {de}
}