?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.aulast=Allen&rft.au=Allen%2C+Julia&rft.aufirst=Julia&rft.title=Encouraging+Efficiency+%3A+Macros+at+Work+--+Macro+Express&rft.date=7+June+2005&rft.genre=proceeding