34339document18589Decl_IS_Wiersma11MRes1.pdfapplication/pdf9f4efa2ed13b9ef98b04f759f7f942c9MD51729012012-02-21 09:52:32http://etheses.bham.ac.uk//id/eprint/3208/2/Decl_IS_Wiersma11MRes1.pdf