25514document15444Decl_IS_Basnayake_11_PhD.pdfapplication/pdfbb19cec4f99e148fce9ef50bf02c1aa0MD52822972011-10-25 10:55:52http://etheses.bham.ac.uk//id/eprint/2862/2/Decl_IS_Basnayake_11_PhD.pdf