?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Davidsson%2C+Per&rft.aulast=Davidsson&rft.aufirst=Per&rft.title=Introduction&rft.isbn=978-1-84980-137-9&rft.date=2011&rft.genre=bookitem