37881document1987301_Contraction_[workshop,_not_final_version].mp3audio/mpegfa6d6d83ce9e0fe89e8bc5d5a364170bMD5228738942012-05-29 13:11:33http://etheses.bham.ac.uk//id/eprint/3237/8/01_Contraction_%5Bworkshop%2C_not_final_version%5D.mp3