A great source of information: Barnetts Manual: on wheels
http://www.duke.edu/~hpgavin/papers/HPGavin-Wheel-Paper.pdf
http://www.johnforester.com/Articles/BicycleEng/Wheel.htm
http://www.bontrager.com/assets/File_Listings/asset_upload_file325_970.pdf
http://www.sheldonbrown.com/rinard/wheel/index.htm
