@article{millar2005,
  added-at = {2007-01-27T19:31:45.000+0100},
  author = {Millar, Robin},
  biburl = {http://www.bibsonomy.org/bibtex/297bd69689223bc91c8d148b22257ed6d/andreab},
  editor = {of York, University},
  interhash = {279d8f01dd0f79ecdceddde2b7df1bb7},
  intrahash = {97bd69689223bc91c8d148b22257ed6d},
  keywords = {formazione teaching energy energia didattica abruzzo},
  timestamp = {2007-01-27T19:31:45.000+0100},
  title = {Teaching about energy},
  url = {http://www.york.ac.uk/depts/educ/ResearchPaperSeries/index.htm},
  year = 2005
}

@article{heuvelen:184,
  added-at = {2007-01-25T20:39:39.000+0100},
  author = {Heuvelen, Alan Van and Zou, Xueli},
  biburl = {http://www.bibsonomy.org/bibtex/2dd37d6af6ddf7c81aae64cc10ad85d7a/andreab},
  interhash = {0fd3ee2c4c4de553c7813e9aeb772d1f},
  intrahash = {dd37d6af6ddf7c81aae64cc10ad85d7a},
  journal = {American Journal of Physics},
  keywords = {formazione energy energia didattica abruzzo},
  number = 2,
  pages = {184-194},
  publisher = {AAPT},
  timestamp = {2007-01-25T20:39:39.000+0100},
  title = {Multiple representations of work--energy processes},
  url = {http://link.aip.org/link/?AJP/69/184/1},
  volume = 69,
  year = 2001
}