3New Wiring. Construction and the Internet: Builders Go Online[R]. The Economist, 2000-1- 15.
4Gallaher M P, O' Connor A C, Dettbarm Jr. J L, and Gilday L T. Cost Analysis of Inadequate Interoperability in the U.S. Capital Facilities Industry[R]. National Institute of Standards and Technology. U.S. Department of Commerce, NIST GCR 04-867, 2004.
