Journal article, Peer reviewed
Uniped 2014. © 2014 Åse broman. this is an open access article distributed under the terms of the creative commons c c- b y 4.0 license (http://creativecommons.org/licenses/by/4.0/), allowing third parties to copy and redistribute the material in any medium or format and to remix, transform, and build upon the material for any purpose, even commercially, provided the original work is properly cited and states its license.
Date
2014