?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aulast=Lewis&rft.au=Lewis%2C+AM&rft.aufirst=AM&rft.date=1991&rft.title=The+modelling+of+electromagnetic+methods+for+the+nondestructive+testing+of+fatigue+cracks&rft.inst=UCL+(University+College+London)&rft.tpages=185&rft.degree=Doctoral