?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.au=Foster%2C+Vivien&rft.aulast=Foster&rft.aufirst=Vivien&rft.inst=UCL+(University+College+London)&rft.date=1999&rft.tpages=361&rft.title=On+the+voluntary+financing+of+public+goods&rft.degree=Doctoral