@misc{ButzinWidmaier2012,
  author    = {Anna Butzin and Brigitta Widmaier},
  title     = {The study of time-space dynamics of knowledge with innovation biographies. Working paper on innovation and space},
  number    = {07/12},
  institution = {Institut Arbeit und Technik},
  type      = {workingpaper},
  year        = {2012},
}