Polar Record /
Volume
48 /
Issue 02 /
Sun Apr 01 00:00:00 BST 2012,
pp 157 - 164
Copyright © Cambridge University Press 2011. The online version of this article is published within an Open Access environment subject to the conditions of the Creative Commons Attribution-NonCommercial-ShareAlike licence <http://creativecommons.org/licenses/by-nc-sa/2.5/>. The written permission of Cambridge University Press must be obtained for commercial re-use.
DOI:
http://dx.doi.org/10.1017/S0032247411000222
(About DOI),
Published online: Fri Jul 08 00:00:00 BST 2011