?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.au=de+Souza%2C+Ielbo+Marcus+Lobo&rft.aulast=de+Souza&rft.aufirst=Ielbo+Marcus+Lobo&rft.date=1993&rft.inst=University+College+London&rft.degree=Doctoral&rft.title=Customary+international+law+in+theory+and+practice+with+special+reference+to+the+emergence+of+the+Exclusive+Economic+Zone.&rft.tpages=275