@phdthesis{Dittmer2009,
  author    = {Dittmer, Mareike},
  title     = {Unterricht, E-Mail und Internet in Kombination f{\"u}r das Lernen im Chemieunterricht},
  address   = {Potsdam},
  pages     = {112 S. : Ill., graph. Darst. + 1 CD-ROM},
  year      = {2009},
  language  = {de}
}