@inbook{9f9cd3a40625445f867ba12bb6cf70f8,
title = "Conceptualising Mental Representations of Mechanics: a method to investigate representational change.",
author = "{van der Veer}, G.C. and E. Kok and T. Bajo",
year = "1999",
language = "English",
isbn = "0080434541",
series = "Advances in Learning and Instruction Series",
publisher = "Pergamon/Elsevier Science",
pages = "44--60",
editor = "D. Kayser and S. Vosniadou",
booktitle = "Modelling Changes in Understanding: Case Studies in Physical Reasoning.",
}