@inbook{bac0e66991cb4225aee8bf3ea90fb870,
title = "Didactical contract and costum: Analytical concepts to facilitate successful implementation of alternatives to standard physics labs",
author = "Johannsen, {Bj{\o}rn Friis} and Jacobsen, {L{\ae}rke Bang}",
year = "2010",
language = "English",
series = "INDs skriftserie ",
publisher = "Institut for Naturfagenes Didaktik, K{\o}benhavns Universitet",
number = "18",
pages = "53--70",
editor = "Carl Winsl{\o}w and Robert Evans",
booktitle = "Didactics as Design Science",
}