@PhdThesis{Voit2012b,
  author = 	 {Karl Voit},
  title = 	 {TagTrees: Improving Personal Information Management
                  using Associative Navigation},
  school = 	 {Graz University of Technology},
  year = 	 {2012},
  OPTkey = 	 {},
  OPTtype = 	 {},
  address = 	 {Graz, Austria},
  month = 	 nov,
  OPTnote = 	 {},
  OPTannote = 	 {}
}