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