?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aulast=Wood&rft.au=Wood%2C+Nicholas&rft.aufirst=Nicholas&rft.degree=Doctoral&rft.inst=UCL+(University+College+London)&rft.tpages=170&rft.title=Determination+of+the+number+of+light+neutrino+generations&rft.date=1990