@Misc{free-sw,
		  author =       "Richard Stallman",
		  title =        "What is {F}ree {S}oftware",
		  howpublished = "http://www.gnu.org/philosophy/free-sw.html",
		  }

		  @Book{hackers,
		  author = "Steven Levy",
		  title = "Hackers",
		  publisher = "Dell Publishing",
		  address = "New York, New York",
		  year = 1984,
		  }

		  @Misc{PTO,
		  author = "Various",
		  title = "Our Business: An Introduction to the PTO",
		  howpublished =
		  "http://www.uspto.gov/web/menu/intro.html",
		  }

		  @Misc{NII,
		  author = "Working Group on Intellectual Property
		  Rights, National Information Infrastructure Task Force.",
		  title = "Intellectual Property and the National
		  Information Infrastructure",
		  month = "September",
		  year = 1995,
		  howpublished =
		  "http://www.uspto.gov/web/offices/com/doc/ipnii/"
		  }
		  
		  @Article{LPF, 
		  author = "League For Programming Freedom", 
		  title = "Against Software Patents",
		  journal = "Communications of the ACM",
		  month = "January",
		  year = 1992,
		  }